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A013714 9^(2n+1). 2
9, 729, 59049, 4782969, 387420489, 31381059609, 2541865828329, 205891132094649, 16677181699666569, 1350851717672992089, 109418989131512359209, 8862938119652501095929, 717897987691852588770249, 58149737003040059690390169 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..150

Tanya Khovanova, Recursive Sequences

Index entries for linear recurrences with constant coefficients, signature (81).

FORMULA

a(n)=81*a(n-1), n>0 ; a(0)=9 . G.f.: 9/(1-81*x). - Philippe Deléham, Nov 25 2008

PROG

(MAGMA) [9^(2*n+1): n in [0..20]]; // Vincenzo Librandi, May 26 2011

(PARI) a(n)=9^(2*n+1) \\ Charles R Greathouse IV, Jul 11 2016

CROSSREFS

Sequence in context: A053933 A145262 A154026 * A069034 A053847 A053854

Adjacent sequences:  A013711 A013712 A013713 * A013715 A013716 A013717

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified June 25 18:15 EDT 2017. Contains 288729 sequences.