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A013744 9^(3n+1). 1
9, 6561, 4782969, 3486784401, 2541865828329, 1853020188851841, 1350851717672992089, 984770902183611232881, 717897987691852588770249, 523347633027360537213511521, 381520424476945831628649898809 (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)=9 . G.f.: 9/(1-729*x). - Philippe Deléham, Nov 30 2008

PROG

(MAGMA) [9^(3*n+1): n in [0..20]]; // Vincenzo Librandi, Jun 26 2011

(PARI) a(n)=9^(3*n+1) \\ Charles R Greathouse IV, Jul 10 2016

CROSSREFS

Sequence in context: A185821 A133248 A125542 * A060761 A053975 A191961

Adjacent sequences:  A013741 A013742 A013743 * A013745 A013746 A013747

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified May 28 19:46 EDT 2017. Contains 287241 sequences.