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A199031 2*12^n-1. 1
1, 23, 287, 3455, 41471, 497663, 5971967, 71663615, 859963391, 10319560703, 123834728447, 1486016741375, 17832200896511, 213986410758143, 2567836929097727, 30814043149172735, 369768517790072831, 4437222213480873983 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..900

Index entries for linear recurrences with constant coefficients, signature (13,-12).

FORMULA

a(n) = 12*a(n-1)+11.

a(n) = 13*a(n-1)-12*a(n-2).

G.f.: (1+10*x)/((1-x)*(1-12*x)).  - Bruno Berselli, Nov 03 2011

MATHEMATICA

LinearRecurrence[{13, -12}, {1, 23}, 40] (* Harvey P. Dale, Feb 21 2013 *)

PROG

(MAGMA) [2*12^n-1: n in [0..20]];

CROSSREFS

Sequence in context: A010975 A022588 A268992 * A125435 A086943 A131273

Adjacent sequences:  A199028 A199029 A199030 * A199032 A199033 A199034

KEYWORD

nonn,easy

AUTHOR

Vincenzo Librandi, Nov 03 2011

STATUS

approved

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Last modified November 17 03:06 EST 2019. Contains 329216 sequences. (Running on oeis4.)