A013795 a(n) = 11^(4*n+3).

1331, 19487171, 285311670611, 4177248169415651, 61159090448414546291, 895430243255237372246531, 13109994191499930367061460371, 191943424957750480504146841291811, 2810243684806424785061213903353404851

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn
• easy

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 (14641).

Crossrefs

Subsequence of A001020. - Michel Marcus, Apr 08 2017

Programs

Magma

[11^(4*n+3): n in [0..10]]; // Vincenzo Librandi, Jun 28 2011

Maple

A013795:=n->11^(4*n+3): seq(A013795(n), n=0..10); # Wesley Ivan Hurt, Apr 08 2017

Mathematica

11^(4*Range[0,10]+3) (* or *) NestList[14641#&,1331,10] (* Harvey P. Dale, May 26 2016 *)
CoefficientList[Series[1331/(1- 14641x), {x, 0, 10}], x] (* Indranil Ghosh, Apr 09 2017 *)

PARI

a(n) = 11^(4*n + 3) \\ Indranil Ghosh, Apr 09 2017

Python

def a(n): return 11**(4*n + 3) # Indranil Ghosh, Apr 09 2017

Formula

a(n) = 14641*a(n-1). - Harvey P. Dale, May 26 2016

G.f.: 1331/(1 - 14641x). - Indranil Ghosh, Apr 09 2017