Donations - The OEIS Foundation Inc

To donate to The OEIS Foundation Inc.

Donations to The OEIS Foundation Inc. can be made in several ways.

DISCLAIMER: Donations to the OEIS Foundation should be tax deductible for U.S. citizens and residents, but please consult your tax advisor first, especially for donations of stock or securities or required minimum distributions.

Through PayPal, using the icon at the top right of this page.
Directly, with a check or money order made out to The OEIS Foundation Inc., and sent to:

Robert Roy Price,
Treasurer, The OEIS Foundation Inc.,
2340 Saunders Station Road,
Monroeville, PA 15146 USA
By a wire transfer to the OEIS Foundation bank account. For information on how to do this, please contact Robert Roy Price (treasurer@oeisf.org).
By donating appreciated stock or securities. Rather than selling the stock or securities, make donations directly to the OEIS Foundation, thus avoiding capital gains tax and still getting an income tax deduction for the full fair market value of the donated items.
If your Required Minimum Distributions (RMDs) are pushing you into a higher tax bracket, you may be able to avoid the problem (if you are over 73) by donating the RMD directly to the OEIS Foundation. Then it doesn’t count as income, and the full amount (subject to certain limitations) counts as a charitable contribution. This kind of RMD is called a Qualified Charitable Distribution, or QCD. For information on how to do this, please contact Robert Roy Price (treasurer@oeisf.org).

Keep in mind that many corporations have a fund-matching program - they will match your charitable contributions. This is an excellent way to double your donation to the OEIS Foundation!

The OEIS Foundation’s tax identification number or EIN is 30-0562250.

All donations will be gratefully acknowledged on this page.

To make a donation in honor of someone, or to celebrate an event, etc., first make the donation, and then send an email to treasurer@oeisf.org with the amount and how you would like it to be listed (for example, “John Smith [your name] (in honor of …..)”). It may take a couple days for the entry to be listed.

2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009

Donors in 2024

Gauss Circle Benefactors in 2024 (Gifts of $25,000 and above):

Lorette and William Cheswick
Susanna Cuyler
Neil J. A. Sloane

Benefactors in 2024 (Gifts of $5,000 and above):

Sponsors in 2024 (Gifts of $1,000 and above):

Anonymous
Tiam Koukpari (in honor of Hossein Movasati, my graduate school advisor)
Henri Lifchitz
Greg Maxwell
Robert A. Russell
Christopher Scussel
Allen Stenger
Paul and Bonita Stockmeyer
David R Stoutemyer

Patrons in 2024 (Gifts of $100 and above):

Jean-François Alcover
America Online Giving
Alon Amit
Peter Anderson
Anonymous
Anonymous, In Memory of Stephen B. Maurer
Alford Arnold
Mohammad K. Azarian
Vasilii Bashilov
Robert Bastasz
Neil Bostian
Nathan Brown
Robert Bywater
William Cheswick and Nancy Blachman, from auctioning Paul Erdos’s raincoat at a Gathering for Gardner meeting
William Clary
David Cleaver
Michael Collins
Donald Craig
Raul Cuza
Vasudha Duggirala (honoring the Faculdade de Letra at the University of Coimbra)
David Edelman
Michael Ennis
Charles Gaydos
Paul S. Henry
Terence Hosken
Darrell Hotchkiss
Kirill Katsnelson
Ron Knott
Matthew Laird
B D and M D McIlroy
John Morack
Kent Morrison
John Mudge
Tamas Sandor Nagy
Oleg Panczenko
Matt Parker
Phillip L. Poplin
Raul Prisacariu
Boris Putievskiy
James Rasbold
Alexander Roper
Douglas Rowlands
Thomas Scheuerle
Thomas Scheuerle (in memory of Eric Angelini)
Joshua Segall
Scott Shannon (in memory of Eric Angelini)
Hal Switkay
David J Sycamore
Jesse Thompson
Viola-Billey Family Fund
Paul Vosper
Tynan A. Wait
Blake White
Doron Zeilberger (in honor of Mark van Hoeij for meeting a challenge raised and solved here)
Doron Zeilberger (in honor of Svante Janson and Mihai Nica for solving a problem raised here)

Other gifts in 2024:

The OEIS Foundation Inc. is extremely grateful to all the editors, all unpaid, who spend so many hours processing submissions and improving OEIS entries. They keep the OEIS up-to-date and accurate.

The OEIS Foundation Inc. is also grateful to the American Mathematical Society for facilitating our access to MathSciNet in 2024.

Donors in 2023

Gauss Circle Benefactors in 2023 (Gifts of $25,000 and above):

Benefactors in 2023 (Gifts of $5,000 and above):

Russ Cox
Susanna S. Cuyler
Neil J. A. Sloane

Patrons in 2023 (Gifts of $100 and above):

Bysoft Data Ab
Hanumantha Addanki
Jean-François Alcover
Anonymous
Anonymous (in memory of Stephen B. Maurer)
Anonymous (via Paypal Giving Fund)
David Applegate and Barbara Chubb
Mohammad K. Azarian
Sara Billey
Jerzy Borysowicz
Michael Branicky
Clifford Cary
Umberto Cerruti
Ray Chandler
Vyjayanthi Chari
Victor Cianni
Paul Conradi
Donald Craig
David Crookes
Paul Curtz
Robert Dickau
Robert Dougherty-Bliss
Jeremy Dover
Paul Duckett
David Edelman
Rémi Eismann
Diana Eppstein
Georg Fischer
Daniel E. Frohardt
Charles Gaydos
Patrick De Geest
Renat Gimadeev
Keith E Gorlen
Giver Gregg
Rainer Grzybowski
Paul S. Henry
AJ Hildebrand
Thomas Hull
Llewellyn Jeffery
The John M. Shapiro Trust
Clark Kimberling
Tiam Koukpari (in honor of Rob Corless - the answer is 42!)
Jerry Lagrou
Yaping Lu
Philip Lucido
Robert Lyons
Seiichi Manyama
Peter Mao
Roland Miyamoto
Kent Morrison
Tamas Sandor Nagy
Paulo González Ogando
Valentin Ovsienko
Raul Prisacariu
James Rasbold
John Rascoe
James Rayman
Adrian Rodriguez
Jon E Schoenfield
Scott Shannon
Remy Sigrist
Ólafur Siemsen Sigurðarson
Sven Simon
Todd Simpson
Richard Stanley
James Tattersall
Ruud H.G. Van Tol
Vinay Vaishampayan
Neil Webber
Hans Rudolf Widmer
Benjamin Willett
Celia Zeilberger (in honor of her father)
Doron Zeilberger
Doron Zeilberger (in honor of Jesus Guillera’s 68th birthday)
Doron Zeilberger (in honor of Manuel Kauers for meeting a challenge)
Doron Zeilberger (in honor of Manuel Kauers for meeting a challenge)

Other gifts in 2023:

The OEIS Foundation Inc. is also grateful to the American Mathematical Society for facilitating our access to MathSciNet in 2023.

Donors in 2022

Gauss Circle Benefactors in 2022 (Gifts of $25,000 and above):

The Simons Foundation

Benefactors in 2022 (Gifts of $5,000 and above):

Russ Cox

Patrons in 2022 (Gifts of $100 and above):

Bysoft Data Ab
Jean-François Alcover
Eric Angelini
Anonymous
David Applegate
Mohammad K. Azarian
James Bergen
Jerzy Borysowicz
Michael Branicky
Robert Bywater
George M Caplan (in Memory of Stephen B. Maurer)
Ray Chandler
Claudio Corbetta
Donald Craig
John Cromer
Robert Dickau
Jeremy Dover
Paul Duckett
Patrick Ekman
Diana Eppstein
Georg Fischer
Daniel E. Frohardt-Lane
Charles Gaydos
Olivier Gerard
Give Lively Foundation Inc.
Keith Gorlen
Rainer Grzybowski
Rachel Gupta
Mary B. Henry
Darrell Hotchkiss
Thomas Hull
Sean Irvine
Peter Kagey
Kirill Katsnelson
Clark Kimberling
Ron Knott
Leonid Kovalev
David Lovler
Peter Lu
Philip Lucido
George Madden
Seiichi Manyama
Peter Mao
John Mason
John May
Kent Morrison
Tamas Sandor Nagy
James Rasbold
Andrey Rukhin
Jon Schoenfield
Gunther Schrack
Christopher Scussel
Finn Selle
Scott Shannon
Lou Shapiro
Rémy Sigrist
Sven Simon
Robert Simpson
David J Sycamore
James Tattersall
Ruud H.G. Van Tol
Elizabeth Uptegrove
Vinay Vaishampayan
Neil Webber
Allan Wechsler
Hans Rudolf Widmer
Robert Wilson
Yuxuan Yang (in memory of Jerrold Tunnell (1950-2022))
Doron Zeilberger (in honor of Manuel Kauers who met a challenge raised here)
Doron Zeilberger (in honor of Rintaro Matsuo, Manuel Kauers, and Christoph Koutschan), for meeting a challenge raised here

Friends in 2022 (Gifts of less than $100):

Malachi De AElfweald
Vivek Advani
Musab Akbas
Feryal Alayont
Egor Alimpiev
Pontus Amberg
Matthew Anderson
Peter Anderson
Jason Bard
Daniel Barker
Christian Baumann
Carlo Beenakker
Bernáth Bence
The Blackbaud Giving Fund
Philippe Bondon
Jeff Bowermaster
Barry Brent
Axel Brisse
Nathaniel Chaverin
Andres Cicuttin
Michael Collins
Luc Comeau-Montasse
Evan Delgaudio
Stephen Dempsey
Alex Denofre
Ziv Dor
David Edelman
John Erickson
Itai Ferber
Luis Ferroni
Julian Fox
Nathan Fox
The Freeman-Mosher Family Fund
Pacôme Fromager
Tad Gallion
Christopher Galus
Patrick De Geest
Nelson Goldsworth
John Goodman
Ronald Gove
Stefan Gruenwald
Thomas Gugielmo (in honor of Charlie Marion)
Andrew Gutekanst
Samuel Harkness
Mitchell Harris
James Heath
Sebastian Hehn
Richard Hensh
Wolfgang Hintze
Phillip Hutto
Dmitry Ignatov and Svyatoslav Elizarov
Frank M Jackson
Jérôme Jean-Charles
Jonah Johnson
Walter Kehowski
John Keith
Al Al Kelley
Rhema Compassion Kenya
Sigurd Kittilsen
Scott Kominers
Tiam Koukpari (in honor of Laura Jamieson, who introduced me to math)
Brenda Kouyoumdjian
Martin Kreuzer
Brian Lacki
Wolfdieter Lang
Charles D Leach
Michael Lopez
Wild Egg Pty Ltd
Mario Luoni
Nollaig Mackenzie
Antonín Maloň
Cristian Marcovici
Michael May
Peter Mcnair
Allan C MeNeely
Donald Mintz
Lloyd Mitchell
Sally Moite
John W Morse
Frank Mullin
Philippe Nadeau
Evgeny Naumov
Tim Neumann
Owen O’Shea
Stuart Orford
Felix Pahl
James Parks
Loren Pearson
Timothy Pederick
Andres Ventas Perez
Burkard Polster
Robert Potter
Raul Prisacariu
Federico Provvedi
Enrique Pérez
Timothy Quinn
Christopher Reade
Woomerang Research
Alain Rocchelli
Rocrof
John Rogers
Louis Rogliano
Ambrosio D Valencia Romero
Rainer Rosenthal
Luc Rousseau
Isaac Saffold
Pamela Satterthwaite
Ben Schiery
Peter Schonefeld
Brian M Scott
Carl Sieke
George Soliman
Florian Starke
Michael Stocker
Alun Stokes
Jerome Storti
Ioannis Tasoulas
Martin Terry
Ian Tullis
Derek Upham
Stanley Wagon
Xing Wang
Jennifer Ward
Aaron Warwick
Mike Weiner
Zackary Welch
Paul Wendelboe
Arkadiusz Wesołowski
Blake White
Stephen Witham
Paolo Xausa
Dmitry Yamplsky
Shenghui Yang
Jochen Ziegenbalg
Arne Zillmer

Other gifts in 2022:

The OEIS Foundation Inc. is also grateful to the American Mathematical Society for facilitating our access to MathSciNet in 2022.

Donors in 2021

Gauss Circle Benefactors in 2021 (Gifts of $25,000 and above):

Anonymous
The Simons Foundation

Benefactors in 2021 (Gifts of $5,000 and above):

Bill Cheswick
Russ Cox

Patrons in 2021 (Gifts of $100 and above):

Jean-François Alcover
Amazon Smiles
David Applegate and Barbara Chubb
Alford Arnold
Benevity Fund
George Beck
Jon Bentley
Jerzy R Borysowicz
Michael Branicky
Kadin Browne
Benjamin Chaffin
Ray Chandler
Benoit Cloitre
Claudio Corbetta
Donald Craig
Gary Croft
Emeric Deutsch
Sean Dippold (in memory of Natalie R. DelBusso)
Jeremy Dover
Paul Duckett
Charles Gaydos
Keith E Gorlen
Carl Ellis
Georg Fischer
Rainer Grzybowski
Ron Knott
Marc LeBrun
David Lovler
Philip Lucido
Petros Hadjicostas
Roger Haskell
Paul Henry
Peter Kagey
Kirill Katsnelson
Clark Kimberling
Layman Fund, Fidelity Charitable
Giver Gregg, Fidelity Charitable
Peter Lu
Peter Mao
John Morack
Valentin Ovsienko
Art Owen
Periodic Videos Ltd
Richard Peterson
Kade Phillips
James Rasbold
Jon E. Schoenfield
Matthew Schuster
Schwab Charitable Fund
Scott Shannon
The John M. Shapiro Charitable Trust
Remy Sigrist
Sven Simon
Richard Stanley
Linda Thomas
Owain Thomas
Elizabeth Uptegrove
Blake White
Hans Rudolf Widmer
Gregory Whittaker
Vinay Vaishampayan
Jesus Maria Yurramendi Mendizabal
Doron Zeilberger (in honor of Frank Calegari)
Doron Zeilberger (in honor of Michael Wallner for answering a question raised here
Doron Zeilberger (in honor of Yuxuan Yang for meeting the many challenges raised here)

Other gifts in 2021:

The OEIS Foundation Inc. is also grateful to the American Mathematical Society for facilitating our access to MathSciNet in 2021.

Donors in 2020

Donations received in our 2019 fund-raising drive during the first ten days of January 2020 were included in our 2019 Donors list.

Gauss Circle Benefactors in 2020 (Gifts of $25000 and above):

The Simons Foundation

Sponsors in 2020 (Gifts of $1000 and above):

Russ Cox
Susanna Stevens Cuyler
Harvey Dale
Tom Duff
Google Inc.
Hawaii Community Foundation
Fred Kline
Donald and Jill Knuth
N. J. A. Sloane
Allen Stenger
Paul K. and Bonita K. Stockmeyer via the Heartland Charitable Trust

Patrons in 2020 (Gifts of $100 and above):

Roland Acra
Jean-François Alcover
David Applegate and Barbara Chubb
David Baugh
George Beck
Benevity Fund
Jerzy Borysowicz
Michael Branicky
Ray Chandler
Stuart Clary
Claudio Corbetta
Donald Craig
David Crookes
Robert Dickau
Carl Ellis
Georg Dr Fischer
Daniel Frohardt
Olivier GERARD
Juan Gil
Ely Golden
Gregg-Springer Work via Fidelity Charitable
Ian Griswold
Petros Hadjicostas
Paul Henry
Thomas Hull
S Irvine
Aleksandar Janjic
Peter Kagey
Tamas Kalmarnagy
Mikhail Khovanov
Clark Kimberling
Diane and John Konvalina (thanking Doron Zeilberger)
Alex Kulakov
Marc LeBrun
Henri Lifchitz
David Lovler
Peter Lu
Philip Lucido
Robert Macartney
Seiichi Manyama
Lars Nordgren
Kostas Oikonomou
Hilarie Orman
Valentin Ovsienko
Richard Peterson
James Rasbold
Bernard Schott
Gunther Schrack
Matthew Schuster
Christopher Scussel
Scott Shannon
Rémy Sigrist
Sven Simon
Louis Shapiro
Daniel Stahlke
Richard Stanley
Sinan Taifour
Technical University of Kosice
TehGelly
Dirck Uptegrove
Vinay Vaishampayan
Daniel Vandermast
Allan Wechsler
Blake White
Gregory Whittaker
Stephen Wilkus
Doron Zeilberger (in honor of Carsten Schneider who met a challenge made here)
Doron Zeilberger (in honor of Chaim Even-Zohar who met a challenge made here.
Jason Zimba

Other gifts in 2020:

The OEIS Foundation Inc. is also grateful to the American Mathematical Society for facilitating our access to MathSciNet in 2020.

Donors in 2019 (including some from early January 2020)

Gauss Circle Benefactors in 2019 (Gifts of $25000 and above):

The Simons Foundation

Patrons in 2019 (Gifts of $100 and above):

Roland Acra
Ian Agol and Michelle McGuinness
Jean-François Alcover
Lorenzo Sauras Altuzarra
Anonymous
David Applegate and Barbara Chubb Family Fund
Gary Au
Peter Bala
Vasily Bashilov
George Beck
Benevity Fund
Sara Billey
Gerold Brändli
David Callan
Ray Chandler
Johann Cigler
William Clary
Matthew Conroy
Claudio Corbetta
Donald Craig
Geoffrey Critzer
Robert Dickau
Susan Dickey
Patrick Ekman
Georg Fischer
Daniel Frohardt
Olivier GERARD
Juri-Stepan Gerasimov
Google Matching Fund
Keith E. Gorlen
Ron Graham
Gregg-Springer Work via Fidelity Charitable
Petros Hadjicostas
Brian Hayes
Paul Henry
David Hruska
Thomas Hull
Daniel Kabat
Peter Kagey
Clark Kimberling
Charles Kusniec
Marc LeBrun
Philip Lucido
Seiichi Manyama
Peter Mao
James McCarron
Danilo Merelli
Joseph Moser
William Muller
Francois Oger
Laurent Orseau
Valentin Ovsienko
James Rasbold
Jon E. Schoenfield
Bernard Schott
Christopher Scussel
Scott Shannon
The John M. Shapiro Charitable Trust
Louis Shapiro
Rémy Sigrist
Sven Simon
John Snyder
Colin Paul Spears
Katherine Stange
Richard P. Stanley / Stanley Family Fund / Fidelity Charitable
Paul K. and Bonita K. Stockmeyer
Symantec Corp. Matching Fund
Robert Underwood
Elizabeth Uptegrove
Vinay Vaishampayan
Willy Van den Driessche
Tynan Wait
Blake White
Jesus Maria Yurramendi Mendizabal
Celia Zeilberger (in honor of her father’s 69th birthday)
Doron Zeilberger (in honor of Marcus Michelen who solved a problem posed here)

Other gifts in 2019:

Peter Luschny kindly produced the new banner that appears on every OEIS page.

The OEIS Foundation Inc. is also grateful to the American Mathematical Society for facilitating our access to MathSciNet in 2019.

Donors in 2018

Gauss Circle Benefactors in 2018 (Gifts of $25000 and above):

The Simons Foundation

Benefactors in 2018 (Gifts of $5000 and above):

N. J. A. Sloane

Patrons in 2018 (Gifts of $100 and above):

Jean-François Alcover
Anonymous (2 donations)
David Applegate
Peter Bala
George Beck
Sarah Billey
Sean Bloomfield
Umberto Cerruti
Benjamin Chaffin
Ray Chandler
Claudio Corbetta
Donald Craig
Emeric Deutsch (2)
Robert Dickau
Karl Dilcher
REMI EISMANN
Roger Entringer
Georg Fischer
Olivier GERARD
Juri-Stepan Gerasimov
Mats Granvik
Petros Hadjicostas
Brian Hayes
Paul Henry
David Hruska
Thomas Hull
Intel Matching Fund
Karl Javorszky
L. Edson Jeffery
David Jeschke
Peter Kagey
Kirill Katsnelson
Clark Kimberling
Philip Lucido
Keith F. Lynch
Seiichi Manyama
Peter Mao
Charles F. Marion
Jerry Metzger
Microsoft / Benevity Community Impact Fund
Cleve Moler
Joseph Moser
Enrique Navarrete
Gordan Palameta
Robert Price
Klaus PURATH
Paul Raff
James Rasbold
Matthew Roughan
Jon E Schoenfield
Christopher Scussel
Shoichiro Sekiguchi
The John M. Shapiro Charitable Trust
Louis Shapiro
REMY SIGRIST
Sven Simon
Todd Simpson
Paul Stahura
Richard P. Stanley / Stanley Family Fund / Fidelity Charitable
Paul K. and Bonita K. Stockmeyer
Symantec Corp.
Mauro Torelli (in memory of Ottavio M. D’Antona)
Elizabeth Uptegrove
Jutta Wait
Doron Zeilberger (in honor of Paul Johnson for answering a question raised here)
Doron Zeilberger (in honor of Matthew C. Russell)
Doron Zeilberger (in honor of Christopher Ryba for answering a question posed here)
Doron Zeilberger (in honor of Will Sawin for answering a question
posed here)

Other gifts in 2018:

The OEIS Foundation Inc. is also grateful to William Cheswick, Georg Fischer,and others for helping to develop the “OEIS Sequences and Music” exhibit which is to be part of the “La.La.Lab - The Mathematics of Music” exhibition that will open in May 2019 in Heidelberg (Germany).

The OEIS Foundation Inc. is also grateful to the American Mathematical Society for facilitating our access to MathSciNet in 2018.

Donors in 2017

Gauss Circle Benefactors in 2017 (Gifts of $25000 and above):

The Simons Foundation

Benefactors in 2017 (Gifts of $5000 and above):

Susanna Cuyler and N. J. A. Sloane

Patrons in 2017 (Gifts of $100 and above):

Jean-François Alcover
Anonymous
Michael Anshelevich
Peter Bala
George Beck
Christine Bessenrodt
Jerzy Borysowicz
Johann Cigler
Stuart Clary
Benoit Cloitre
Donald Craig
Michael De Vlieger
Emeric Deutsch
Robert Dickau
Ephraim Fredrickson
Juri-Stepan Gerasimov
Google and Apple / Benevity Community Impact Fund
Ron Graham
Mats Granvik
Matthew Grimm
Rainer Grzybowski
Brian Hayes
Paul Henry
David Hruska
Thomas Hull
P Michael Hutchins
Karl Javorszky
L. Edson Jeffery
Peter Kagey
Clark Kimberling
Charles Kusniec
Jeffrey Lagarias
Marc LeBrun
Stephen N Lee
Peter Luschny
Charles F. Marion
James McCarron
Microsoft / Benevity Community Impact Fund
Danilo Merelli
Jerry Metzger
Todor Mollov
Enrique Navarrete
Hilarie Orman and Rich Schroeppel
James Rasbold
Matthew Russell
Jon E. Schoenfield
Schwab Charitable Fund
Sven Simon
Richard P. Stanley / Stanley Family Fund / Fidelity Charitable
Paul K. and Bonita K. Stockmeyer
Elizabeth Uptegrove
Vinay Vaishampayan
Willy Van Den Driessche
Doron Zeilberger (in honor of Valentin Féray and Svante Janson for answering a question raised here)

The OEIS Foundation Inc. is also grateful to the American Mathematical Society for facilitating our access to MathSciNet in 2017.

Donors in 2016

AT&T supported the OEIS almost from its beginning, by allowing Neil J. A. Sloane to maintain it from 1969 until his reirement from AT&T in 2012 and to host it on his AT&T Labs home page from 1996 through 2010; and also by allowing David Applegate to contribute his services towards maintaining the operation of the OEIS on Neil J. A. Sloane’s web site at AT&T Labs and in its new home from 2010 until David retired from AT&T in 2016.

Renewal of the Trademark “OEIS” was accepted by the United States Patent and Trademark Office on May 25, 2016. We are very grateful to Merck & Co., Inc., and in particular Denise Maistickle and Nancy Rowe of the Merck Office of General Counsel, working “Pro Bono”, who renewed the trademark on behalf of the OEIS Foundation. We also thank Nancy Eberhardt and Kate Marchese of the New Jersey Program of the Pro Bono Partnership for helping to bring this about.

In 2016, Russ Cox made a crucial modification to the submissions program, David Applegate set up a defense against the spammers who had been pounding on our site, and David and Russ together handled the migration of the whole OEIS web site to a new platform. These were huge tasks that no one else could have done, and the Foundation is very grateful to them.

The OEIS would not survive without all the editorial work carried out by the volunteer editors. There are many who helped in 2016, especially Jean-François Alcover, Joerg Arndt, Alonso Del Arte, Colin Barker, Bruno Berselli, Harvey P. Dale, Michael De Vlieger, Olivier Gérard, Charles Greathouse, G. C. Greubel, Ilya Gutkovskiy, M. F. Hasler, Hans Havermann, Alois P. Heinz, Wesley Ivan Hurt, Sean A. Irvine, Robert Israel, Antti Kartunen, Vaclav Kotesovec, Wolfdieter Lang, Paolo P. Lava, Peter Luschny, Michel Marcus, Omar Pol, Danny Rorabaugh, Jon E. Schoenfield, Michael Somos, David W. Wilson, Robert G. Wilson v, Chai Wah Wu, plus dozens of others. The OEIS Foundation thanks them all. This editing work is more valuable than any financial contribution.

Sponsors in 2016 (Gifts of $1000 and above):

Anonymous
Russell Cox
Susanna Stevens Cuyler
Thomas Duff
Fred Kline (pledged)
Donald and Jill Knuth
Shyama Mandal (in honor of the mathematicians from the Indian sub-continent — from Aryabhata, Nilakantha, Ramanujan, to my own math teachers).
Eric Rowland
N. J. A. Sloane
Allen Stenger

Patrons in 2016 (Gifts of $100 and above):

Jean-François Alcover
Moa Apagodu
Peter Bala
Mira Bernstein
John Campbell
Benjamin Chaffin
Ray Chandler
Barbara Chubb
Andres Cicuttin
Benoit Cloitre
Silvio Conte
Claudio Corbetta
Donald Craig
Harvey P. Dale
Michael De Vlieger
Emeric Deutsch
Robert Dickau
Carl Ellis
Daniel Flegler/Mathematics Leagues Inc
Juri-Stepan Gerasimov
Gardenia Giacoman
The Graham Family
Xan Gregg
Christopher Gribble
Ilya Gutkovskiy
Paul Henry
Rui Hu/Mathematics Leagues Inc
Alexander Hulpke
Intel Corp. / Benevity Community Impact Fund
Karl Javorszky
L. Edson Jeffery
Peter Kagey
Walter Kehowski
Leonid Kovalev
Joseph Kung
Charles Kusniec
Jeffrey Lagarias
Pradeep Madhavarapu
Charles F. Marion
Antonio Roidan Martinez
James McCarron
Jerry Metzger
John Morack
Joseph Moser
Charles Munger
Igor Naverniouk
Gionata Neri
Dimitri Papadopoulos
Jeffrey Remmel
Jon E. Schoenfield
Richard Schroeppel
Richard Schroeppel and Hilarie Orman
Brian M Scott
Michael Sierchio
Sven Simon
Cliff Sojourner
Richard P. Stanley / Stanley Family Fund / Fidelity Charitable
Paul K. and Bonita K. Stockmeyer
Robert Underwood
Dirck Uptegrove
Vinay Vaishampayan
Doron Zeilberger (in honor of Jay Pantone for proving a conjecture made here)
Doron Zeilberger (in honor of his esteemed colleagues who are retiring: Earl Taft, Richard Wheeden, Joseph Rosenstein, Richard Lyons, Gregory Cherlin, and Steve Ferry)
Jason Zimba

The OEIS Foundation Inc. is also grateful to the American Mathematical Society for facilitating our access to MathSciNet in 2016.

Donors in 2015

Benefactors in 2015 (Gifts of $5000 and above):

N. J. A. Sloane

Sponsors in 2015 (Gifts of $1000 and above):

Russell Cox
Thomas Duff
Ron Hardin
Donald and Jill Knuth
Zegar Family Fund

Patrons in 2015 (Gifts of $100 and above):

Jean-François Alcover
Altug Alkan
Armar Archbold
Peter Bala
Benjamin Chaffin
Ray Chandler
Donald Craig
Paul Curtz
Harvey P. Dale
Michael Thomas de Vlieger
Leo Depuydt
Eric Desbiaux
Robert Dickau
Juri-Stepan Gerasimov
Xan Gregg
Christopher Gribble
Ilya Gutkovskiy
Alexandre Halm
Paul Henry
Klaus Hoffmann
L. Edson Jeffery
Peter Kagey
Peter Klimek
Fred Kline
Jeffrey Lagarias
Charles F. Marion
Thomas Morgan
Joseph Moser
Seppo Mustonen
Kival Ngaokrajang
Thane Plambeck
Richard Schroeppel and Hilarie Orman
Brian M Scott
Jeffrey Shallit
Jon E. Schoenfield
Sven Simon
N. J. A. Sloane (in honor of Doron Zeilberger for finding a recurrence for A253070)
Richard P. Stanley
Paul K. and Bonita K. Stockmeyer
Jose Tabora
Vladimir Tontchev
Gregory Whittaker
Doron Zeilberger (in honor of Mireille Bousquet-Mélou who came close to meeting a challenge proposed here)
Doron Zeilberger (in honor of Scott Garrabrant and Igor Pak for
disproving the Noonan-Zeilberger conjecture)
Doron Zeilberger (in honor of Ferenc Balogh for completely solving a challenge raised here)
Doron Zeilberger (in honor of Shaoshi Chen and Christoph Koutschan for proving the Wilf-Zeilberger conjecture made in 1992)
Doron Zeilberger (in honor of Paul Johnson, Marko Thiel, and Nathan Williams for meeting a challenge raised here)

Friends in 2015 (Gifts of less than $100):

Lokesh Agrawal
Amazon Smiles
Matt Anderson
Stuart Anderson
Alexei Angelides
Anonymous
David Applegate
Alford Arnold
Mykhaylo Arshynov
Mohammad Azarian
Donatien Bénéat
Praveen Bhamidipati
Ton Biegstraaten
Valerie Blair
Jerzy Borysowicz
Boy Scouts of America Venture Crew 78, Benicia, CA
Jens Byrnak
David Channin
Shaoshi Chen (in celebration of 25 years of Wilf-Zeilberger theory)
William Clark
Bogdan Coanda
Jeffrey Cooper
Joseph Cooper
Nikolas Coukouma
Malachi de AElfweald
Maurizio De Leo
Francesco Di Matteo
David P. Durgin
Patrick Ekman
Frank Farris
Pierandrea Formusa
CHADDAI FOUCHE
Nathan Fox
Freeman-Mosher Family Fund
Tim Fulford
Massimo Galasi
Jeremy Gardiner
Darren Golbourn
António Gonçalves
Google / Benevity Community Impact Fund
Mats Granvik
Merzon Grigory
Richard Grossman
Thomas Guglielmo
Rick Gutleber
Jim Heasley
Enrique Pérez Herrero
Scott Howe
Mohsen Hozan
Frank M Jackson
Jagernot
Gustavo Diaz Jerez
johnathan79717@gmail.com
David Johnston
Karl Keller
Daniel Krenn
Wolfdieter Lang
Robert Laszio
Stephen N Lee
Li Wen-wei
Zhe Lu
Robert Lyons
Antonio Roldan Martinez
Brett Menzies
Stephen Meskin
Donald Mintz
Lloyd Mitchell
Keshavram Murty
Bas Niesink
Bryan OGorman
James Rasbold
Joel Ratnasothy
Margaret Readdy
Michael Reff
Paula Remmel
Gimadeev Renat
Gerhard Riphagen
Ricardo Couso Santamaria
Louis Shapiro
Charles Smith
Michael Stapleton
Alan Stokes
Xiaoqing Tang
Lenny Tevlin
Marko Petteri Tuomainen
Willy Van den Driessche
Nicholas Vasilopoulos
Yehuda Yannay
Terri Yu
Doron Zeilberger (in honor of Ferenc Balogh for making progress on a challenge raised here)
Hui Zheng

The OEIS Foundation Inc. is also grateful to the American Mathematical Society for facilitating our access to MathSciNet in 2015.

Donors in 2014

Benefactors in 2014 (Gifts of $5000 and above):

N. J. A. Sloane

Sponsors in 2014 (Gifts of $1000 and above):

Anonymous (2)
Sara C. Billey
Russ Cox
Donald and Jill Knuth

Patrons in 2014 (Gifts of $100 and above):

Jean-François Alcover
Anonymous
David Applegate
Peter Bala
Anthony Bartoletti
George Beck
JM Bergot
Ray Chandler
William Clark
Donald Craig
Gary Croft
Harvey Dale
Michael Thomas de Vlieger
Leo Depuydt
Emeric Deutsch
Robert Dickau
Karl Dilcher
Mac Fischer
Richard Forberg
Freeman-Mosher Family Fund
Xan Gregg
Christopher Gribble
Maximilian Hasler
Brian Hayes
Paul Henry
Karl Javorszky
Ed Jeffery
Clark Kimberling
Fred Kline
Stephane Legendre
Michel Marcus
Charles F. Marion
James McCarron
Jerry Metzger
John Morack
Kival Ngaokrajang
Thane Plambeck
Paula Remmel
Albert Renshaw
Jon E. Schoenfield
Richard Schroeppel
Brian M Scott
Sven Simon
Richard P. Stanley
Paul K. and Bonita K. Stockmeyer
Vinay Vaishampayan
Robert G. Wilson, v
Doron Zeilberger in honor of Lynn Chua and Krishanu Roy Sankar
Doron Zeilberger in honor of Guillaume Chapuy for proving a conjecture made by S. B. Ekhad and D. Zeilberger
Doron Zeilberger in honor of Max Ehrman (Yale University)
Doron Zeilberger in honor of Matthew Russell for his services to Experimental Mathematics
Reinhard Zumkeller

The OEIS Foundation Inc. is also grateful to the American Mathematical Society for facilitating our access to MathSciNet in 2014.

Donors in 2013

Benefactors in 2013 (Gifts of $5000 and above):

Anonymous
David Scambler
N. J. A. Sloane

Sponsors in 2013 (Gifts of $1000 and above):

Anonymous
Russ Cox
Fred Kline
Jill C Knuth
Tony D. Noe

Patrons in 2013 (Gifts of $100 and above):

Jean-François Alcover
David Applegate
Peter Bala
JM Bergot
Mira Bernstein
Arie Bos
Murray Bremner
Umberto Cerruti
Benjamin Chaffin
Ray Chandler
Charles K. Cook
Donald Craig
Gary Croft
David Crookes
Paul Curtz
Harvey Dale
Leo Depuydt
Emeric Deutsch
Robert Dickau
Federico Echenique (in honor of Doron Zeilberger)
Rémi Eismann
Xan Gregg
Christopher Gribble
Paul Hanna
Brian Hayes
Alois Heinz
Sean Irvine
William Keith
Clark Kimberling
Ron Knott
Marc LeBrun
Stéphane Legendre
Francis Maleval
Michel Marcus
Charles F. Marion
Johannes Meijer
Kival Ngaokrajang
Omar Evaristo Pol
Jeffrey Remmel
Steve Roberts
Brian N Scott
Sven Simon
Aksel Soee
Ralf Stephan
Paul K. and Bonita K. Stockmeyer
Timothy Vaughan
David Wilson
Eric Wolman
Doron Zeilberger (on behalf of the many corrections and solutions of challenging problems by students in his class)
Doron Zeilberger (in honor of Josh Smith, Rutgers University Math Dept’s dedicated computer guru)
Reinhard Zumkeller

The OEIS Foundation Inc. is also grateful to the American Mathematical Society for facilitating our access to MathSciNet in 2013.

Donors in 2012

Benefactors in 2012 (Gifts of $5000 and above):

Joerg Arndt
Neil J. A. Sloane

Sponsors in 2012 (Gifts of $1000 and above):

The American Mathematical Society
Anonymous
Russ Cox
Paul Curtz
Charles R Greathouse IV
Jill Knuth
Tony D. Noe

Patrons in 2012 (Gifts of $100 and above):

David Applegate
Peter Bala
Manuel Blum
Benjamin Chaffin
Ray Chandler/Dell Giving
Benoit Cloitre
Donald Craig
David Crookes
Emeric Deutsch
Tom Duff
Robert Dickau
Rémi Eismann
Gardenia Giacoman
Google Matching Gifts Program
Xan Gregg
Claus Johansen
Clark Kimberling
Michael Kleber
Peter Klimek
Fred Kline
Kenneth Knowlton
Jaume Oliver Lafont
Charles F. Marion
James McCarron
John F. Morack
Omar Evaristo Pol
George Purdy
Albert Renshaw
Brian M. Scott
Richard P. Stanley
Vinay Vaishampayan
Matthew Vandermast
Robert G. Wilson, v
Doron Zeilberger
Reinhard Zumkeller

The OEIS Foundation Inc. is also grateful to the American Mathematical Society for facilitating our access to MathSciNet in 2012.

Donors in 2011

Benefactors in 2011 (Gifts of $5000 and above):

Sponsors in 2011 (Gifts of $1000 and above):

Bruno Berselli
Donald and Jill Knuth
Tony D. Noe
Neil J. A. Sloane

Patrons in 2011 (Gifts of $100 and above):

Matt C. Anderson
Anonymous
Martin Betz
Pierre CAMI
Ray Chandler
Benoit Cloitre
Russ Cox
David Crookes
Paul Curtz
Harvey P. Dale
Carl de Marcken
Dell Giving (Matching Fund)
Emeric Deutsch
Dan Drake
Jeremy Gardiner
Olivier GERARD
Google Matching Gifts Program
Toby Gottfried
Xan Gregg
Christopher Gribble
Alois Heinz
Wolfgang Hintze
Donovan Johnson
Antti Karttunen
Clark Kimberling
Fred Kline
Leonid Kovalev
Marc LeBrun
Shawn Ligocki
Stephen Marak
Charles F. Marion
Johannes Meijer
Will Nicholes
Paul Nick
Ed Pegg, Jr.
Enrique Pérez Herrero
Thane Plambeck
Omar Pol
Bradley Robinson
Phil Rutschman
Bill Sanford
David Scambler
Bent Schmidt-Nielsen
Brian M. Scott
Allen Stenger
William D. Tisdale
Vinay Vaishampayan
David W. Wilson
Robert G. Wilson, v
Reinhard Zumkeller

Donors in 2010

The OEIS Foundation Inc. thanks the Elwyn and Jennifer Berlekamp Fund at the East Bay Community Foundation for a very generous grant for General Support, on June 23 2010.

The OEIS Foundation Inc. is grateful to Marc LeBrun for two very generous donations on Nov. 23 2009 and April 7 2010, and to Adobe Systems Inc. for matching his donations.

Anonymous (2)
Gary W. Adamson
David L. Applegate
Mohammad K. Azarian
The Elwyn and Jennifer Berlekamp Fund at the East Bay Community Foundation
Benoit Cloitre
David Crookes
Eric Desbiaux
Emeric Deutsch
Robert Dickau
Rémi Eismann
Jeremy Gardiner
Christopher Gribble
Paul Hanna
George Hart
Dan Kalman
Antti Karttunen
Reed Kelly
Clark Kimberling
John Layman
Marc LeBrun
Kevin McCoy
Kerry Mitchell
Tony D. Noe
Thane Plambeck
Christopher Rebert
Rich Schroeppel
Sven Simon
Neil J. A. Sloane
Paul K. and Bonita K. Stockmeyer
Kent Vander Velden
Thomas Wieder

Donors in 2009

Ray Chandler
Jeremy Gardiner
Ronald and Fan Graham
Christopher Gribble
Brian Hayes
Marc LeBrun
Charles F. Marion
Pacha Nambi
Tony D. Noe
Warut Roonguthai
Rainer Rosenthal
Neil J. A. Sloane
Andrew Weimholt
Thomas Wieder
Reinhard Zumkeller

The OEIS Foundation, Inc.Donations