login
A013753
a(n) = 13^(3*n + 2).
2
169, 371293, 815730721, 1792160394037, 3937376385699289, 8650415919381337933, 19004963774880799438801, 41753905413413116367045797, 91733330193268616658399616009, 201538126434611150798503956371773, 442779263776840698304313192148785281, 972786042517719014174576083150881262357
OFFSET
0,1
FORMULA
From Philippe Deléham, Nov 30 2008: (Start)
a(n) = 2197*a(n-1); a(0)=169.
G.f.: 169/(1-2197*x).
a(n) = 13*A013752(n). (End)
MATHEMATICA
13^(3*Range[0, 20]+2) (* or *) NestList[2197*#&, 169, 20] (* Harvey P. Dale, Oct 10 2019 *)
PROG
(Magma) [13^(3*n+2): n in [0..15]]; // Vincenzo Librandi, Jun 27 2011
(PARI) a(n)=13^(3*n+2) \\ Charles R Greathouse IV, Jun 27 2011
CROSSREFS
Subsequence of A001022.
Sequence in context: A135824 A195219 A195276 * A013867 A074666 A043658
KEYWORD
nonn,easy
STATUS
approved