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A199562 4*9^n+1. 1
5, 37, 325, 2917, 26245, 236197, 2125765, 19131877, 172186885, 1549681957, 13947137605, 125524238437, 1129718145925, 10167463313317, 91507169819845, 823564528378597, 7412080755407365, 66708726798666277, 600378541187996485 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..1000

Index entries for linear recurrences with constant coefficients, signature (10,-9).

FORMULA

a(n) = 9*a(n-1)-8.

a(n) = 10*a(n-1)-9*a(n-2).

G.f.: (5-13*x)/((1-x)*(1-9*x)).

PROG

(Magma) [4*9^n+1: n in [0..30]];

CROSSREFS

Sequence in context: A323219 A176818 A068785 * A246540 A177395 A258296

Adjacent sequences:  A199559 A199560 A199561 * A199563 A199564 A199565

KEYWORD

nonn,easy

AUTHOR

Vincenzo Librandi, Nov 08 2011

STATUS

approved

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Last modified October 4 11:47 EDT 2022. Contains 357239 sequences. (Running on oeis4.)