The On-Line Encyclopedia of Integer Sequences (OEIS)

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A032058

"BGK" (reversible, element, unlabeled) transform of 1,1,1,1,...
(history; published version)

#11 by Bruno Berselli at Thu Sep 13 03:05:49 EDT 2018

STATUS

reviewed

approved

#10 by Joerg Arndt at Thu Sep 13 02:59:05 EDT 2018

STATUS

proposed

reviewed

#9 by Andrew Howroyd at Thu Sep 13 00:50:41 EDT 2018

STATUS

editing

proposed

#8 by Andrew Howroyd at Thu Sep 13 00:28:59 EDT 2018

NAME

"BGK" (reversible, element, unlabeled) transform of 1,1,1,1,...

DATA

1, 1, 1, 2, 2, 3, 6, 7, 10, 14, 29, 33, 51, 67, 97, 176, 218, 309, 426, 589, 778, 1376, 1649, 2379, 3147, 4381, 5653, 7802, 12158, 15231, 20934, 27871, 37438, 49022, 65405, 84213, 128703, 157987, 215533, 279164, 375746, 479133

OFFSET

1,3

0,4

LINKS

Andrew Howroyd, <a href="/A032058/b032058.txt">Table of n, a(n) for n = 0..1000</a>

PROG

(PARI) seq(n)=[subst(serlaplace(y^0*p + polcoeff(p, 1)), y, 1)/2 | p <- Vec(y-1+prod(k=1, n, 1 + x^k*y + O(x*x^n)))] \\ Andrew Howroyd, Sep 13 2018

EXTENSIONS

a(0)=1 prepended by Andrew Howroyd, Sep 13 2018

STATUS

approved

editing

#7 by Charles R Greathouse IV at Wed Apr 30 01:30:30 EDT 2014

FORMULA

Numbers so far satisfy a(n) = 1/2 * (A032020(n)+1). - _Ralf Stephan, _, Apr 06 2004

Discussion

Wed Apr 30

01:30

OEIS Server: https://oeis.org/edit/global/2171

#6 by Russ Cox at Fri Mar 30 17:37:01 EDT 2012

AUTHOR

_Christian G. Bower (bowerc(AT)usa.net)_

Discussion

Fri Mar 30

17:37

OEIS Server: https://oeis.org/edit/global/178

#5 by N. J. A. Sloane at Thu Nov 11 07:34:06 EST 2010

LINKS

C. G. Bower, <a href="/transforms2.html">Transforms (2)</a>

KEYWORD

nonn,new

nonn

#4 by N. J. A. Sloane at Fri Feb 27 03:00:00 EST 2009

LINKS

C. G. Bower, <a href="http://www.research.att.com/~njas/sequences/transforms2.html">Transforms (2)</a>

KEYWORD

nonn,new

nonn

#3 by N. J. A. Sloane at Sat Jun 12 03:00:00 EDT 2004

FORMULA

Numbers so far satisfy a(n) = 1/2 * (A032020(n)+1). - Ralf Stephan, Apr 06 2004

KEYWORD

nonn,new

nonn

#2 by N. J. A. Sloane at Fri May 16 03:00:00 EDT 2003

LINKS

C. G. Bower, <a href="http://www.research.att.com/~njas/sequences/transforms2.html">Transforms (2)</a>

KEYWORD

nonn,new

nonn

AUTHOR

Christian G. Bower (bowerc@(AT)usa.net)