A013711 a(n) = 6^(2n+1).

6, 216, 7776, 279936, 10077696, 362797056, 13060694016, 470184984576, 16926659444736, 609359740010496, 21936950640377856, 789730223053602816, 28430288029929701376, 1023490369077469249536, 36845653286788892983296

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 (36).

Formula

G.f.: 6/(1-36*x). - Philippe Deléham, Nov 24 2008

a(n) = 36*a(n-1), a(0)=6. - Vincenzo Librandi, May 26 2011

Mathematica

lst={}; Do[AppendTo[lst, 6^(2*n+1)], {n, 0, 5!}]; lst (* Vladimir Joseph Stephan Orlovsky, Jan 15 2009 *)
NestList[36#&, 6, 20] (* Harvey P. Dale, Oct 18 2012 *)

Prog

(Magma) [6^(2*n+1): n in [0..20]]; // Vincenzo Librandi, May 26 2011
(PARI) a(n)=6^(2*n+1) \\ Charles R Greathouse IV, Jul 10 2016

Crossrefs

Sequence in context: A195802 A145249 A154023 * A300593 A281431 A109354

Adjacent sequences: A013708 A013709 A013710 * A013712 A013713 A013714

Keyword

nonn,easy

Author

N. J. A. Sloane

Status

approved