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A199212 a(n) = 2*5^n+1. 1
3, 11, 51, 251, 1251, 6251, 31251, 156251, 781251, 3906251, 19531251, 97656251, 488281251, 2441406251, 12207031251, 61035156251, 305175781251, 1525878906251, 7629394531251, 38146972656251, 190734863281251, 953674316406251 (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 (6,-5).

FORMULA

a(n) = 5*a(n-1)-4.

a(n) = 6*a(n-1)-5*a(n-2).

G.f.: (3-7*x)/((1-x)*(1-5*x)). - Bruno Berselli, Nov 04 2011

PROG

(MAGMA) [2*5^n+1: n in [0..30]];

CROSSREFS

Sequence in context: A145144 A284702 A191341 * A113283 A326519 A127784

Adjacent sequences:  A199209 A199210 A199211 * A199213 A199214 A199215

KEYWORD

nonn,easy

AUTHOR

Vincenzo Librandi, Nov 04 2011

STATUS

approved

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Last modified October 16 22:31 EDT 2021. Contains 348047 sequences. (Running on oeis4.)