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A013745
a(n) = 9^(3*n + 2).
1
81, 59049, 43046721, 31381059609, 22876792454961, 16677181699666569, 12157665459056928801, 8862938119652501095929, 6461081889226673298932241, 4710128697246244834921603689, 3433683820292512484657849089281
OFFSET
0,1
FORMULA
From Philippe Deléham, Nov 30 2008: (Start)
a(n) = 729*a(n-1); a(0)=81.
G.f.: 81/(1-729*x). (End)
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
Subsequence of A001019 (9^n).
Sequence in context: A017560 A128493 A145261 * A093227 A187751 A285997
KEYWORD
nonn,easy
STATUS
approved