The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A173835 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A173835

10^n+2*n.
(history; published version)

#12 by Charles R Greathouse IV at Thu Sep 08 08:45:50 EDT 2022

PROG

(MAGMAMagma) I:=[1, 12]; [n le 2 select I[n] else 11*Self(n-1)-10*Self(n-2)-18: n in [1..20]]; // Vincenzo Librandi, Jul 06 2012

Discussion

Thu Sep 08

08:45

OEIS Server: https://oeis.org/edit/global/2944

#11 by Harvey P. Dale at Tue Dec 01 10:34:00 EST 2015

STATUS

editing

approved

#10 by Harvey P. Dale at Tue Dec 01 10:33:53 EST 2015

MATHEMATICA

LinearRecurrence[{12, -21, 10}, {1, 12, 104}, 20] (* Harvey P. Dale, Dec 01 2015 *)

STATUS

approved

editing

#9 by Charles R Greathouse IV at Sat Jun 13 00:53:28 EDT 2015

LINKS

<a href="/index/Rec">Index to sequences with entries for linear recurrences with constant coefficients</a>, signature (12,-21,10).

Discussion

Sat Jun 13

00:53

OEIS Server: https://oeis.org/edit/global/2439

#8 by Charles R Greathouse IV at Fri Jun 12 15:33:10 EDT 2015

LINKS

<a href="/index/Rec#recLCC">Index to sequences with linear recurrences with constant coefficients</a>, signature (12,-21,10).

Discussion

Fri Jun 12

15:33

OEIS Server: https://oeis.org/edit/global/2437

#7 by Bruno Berselli at Fri Jul 06 08:16:52 EDT 2012

STATUS

editing

approved

#6 by Bruno Berselli at Fri Jul 06 08:16:03 EDT 2012

NAME

a(n)=10^n+2*n.

LINKS

<a href="/index/Rec#recLCC">Index to sequences with linear recurrences with constant coefficients</a>, signature (12,-21,10).

MATHEMATICA

CoefficientList[Series[(1-19*x^2)/((1-x)^2*(1-10*x)), {x, 0, 40}], x] (* Vincenzo Librandi, Jul 06 2012 *)

STATUS

approved

editing

#5 by N. J. A. Sloane at Fri Jul 06 07:11:03 EDT 2012

STATUS

proposed

approved

#4 by Vincenzo Librandi at Fri Jul 06 04:48:24 EDT 2012

STATUS

editing

proposed

Discussion

Fri Jul 06

04:54

Bruno Berselli: Signature, thanks.

#3 by Vincenzo Librandi at Fri Jul 06 04:47:55 EDT 2012

LINKS

Vincenzo Librandi, <a href="/A173835/b173835.txt">Table of n, a(n) for n = 0..100</a>

FORMULA

G.f.: (1-19*x^2)/((1-x)^2*(1-10*x)). - Vincenzo Librandi, Jul 06 2012

a(n) = 11*a(n-1) -10*a(n-2) -18. - Vincenzo Librandi, Jul 06 2012

MATHEMATICA

CoefficientList[Series[(1-19*x^2)/((1-x)^2*(1-10*x)), {x, 0, 40}], x] (* Vincenzo Librandi, Jul 06 2012 *)

PROG

(MAGMA) I:=[1, 12]; [n le 2 select I[n] else 11*Self(n-1)-10*Self(n-2)-18: n in [1..20]]; // Vincenzo Librandi, Jul 06 2012

KEYWORD

nonn,easy

STATUS

approved

editing