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A013756 15^(3n+1). 1
15, 50625, 170859375, 576650390625, 1946195068359375, 6568408355712890625, 22168378200531005859375, 74818276426792144775390625, 252511682940423488616943359375, 852226929923929274082183837890625, 2876265888493261300027370452880859375 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..200

Tanya Khovanova, Recursive Sequences

Index entries for linear recurrences with constant coefficients, signature (3375).

FORMULA

a(n)=3375*a(n-1), n>0 ; a(0)=15 . G.f.: 15/(1-3375*x). - Philippe Deléham, Dec 03 2008

PROG

(MAGMA) [15^(3*n+1): n in [0..15]]; // Vincenzo Librandi, Jun 27 2011

(PARI) a(n)=15^(3*n+1) \\ Charles R Greathouse IV, Jul 10 2016

CROSSREFS

Sequence in context: A157643 A104682 A185902 * A078185 A096224 A129613

Adjacent sequences:  A013753 A013754 A013755 * A013757 A013758 A013759

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified March 30 14:31 EDT 2017. Contains 284302 sequences.