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A013745 9^(3n+2). 1
81, 59049, 43046721, 31381059609, 22876792454961, 16677181699666569, 12157665459056928801, 8862938119652501095929, 6461081889226673298932241, 4710128697246244834921603689, 3433683820292512484657849089281 (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 (729).

FORMULA

a(n)=729*a(n-1), n>0 ; a(0)=81 . G.f.: 81/(1-729*x). - Philippe Deléham, Nov 30 2008

MATHEMATICA

9^(3Range[0, 20]+2)  (* Harvey P. Dale, Mar 30 2011 *)

PROG

(MAGMA) [9^(3*n+2): n in [0..15]]; // Vincenzo Librandi, Jun 26 2011

(PARI) a(n)=9^(3*n+2) \\ Charles R Greathouse IV, Jul 10 2016

CROSSREFS

Sequence in context: A017560 A128493 A145261 * A093227 A187751 A143675

Adjacent sequences:  A013742 A013743 A013744 * A013746 A013747 A013748

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified April 28 05:37 EDT 2017. Contains 285557 sequences.