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A013779 a(n) = 3^(4*n + 3). 1
27, 2187, 177147, 14348907, 1162261467, 94143178827, 7625597484987, 617673396283947, 50031545098999707, 4052555153018976267, 328256967394537077627, 26588814358957503287787, 2153693963075557766310747 (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 (81).

FORMULA

From Philippe Deléham, Nov 25 2008: (Start)

a(n) = 81*a(n-1); a(0)=27.

G.f.: 27/(1-81*x). (End)

PROG

(MAGMA) [3^(4*n+3): n in [0..20]]; // Vincenzo Librandi, Jun 27 2011

CROSSREFS

Subsequence of A000244.

Sequence in context: A304119 A017199 A223476 * A075081 A017307 A167725

Adjacent sequences:  A013776 A013777 A013778 * A013780 A013781 A013782

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified November 21 00:36 EST 2018. Contains 317427 sequences. (Running on oeis4.)