A013762 a(n) = 18^(3*n + 1).

18, 104976, 612220032, 3570467226624, 20822964865671168, 121439531096594251776, 708235345355337676357632, 4130428534112329328517709824, 24088659210943104643915283693568, 140485060518220186283313934500888576, 819308872942260126404286866009182175232, 4778209346999261057189801002565550445953024

Offset

0,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..100

Tanya Khovanova, Recursive Sequences

Index entries for linear recurrences with constant coefficients, signature (5832).

Formula

From Philippe Deléham, Dec 07 2008: (Start)

a(n) = 5832*a(n-1), a(0)=18.

G.f.: 18/(1-5832*x).

a(n) = A013763(n)/18. (End)

Mathematica

18^(3*Range[0, 15] + 1) (* Paolo Xausa, May 29 2026 *)

Prog

(Magma) [18^(3*n+1): n in [0..15]]; // Vincenzo Librandi, May 24 2011
(PARI) a(n)=18^(3*n+1) \\ Charles R Greathouse IV, Jul 11 2016

Crossrefs

Sequence in context: A192081 A290177 A259364 * A078352 A215577 A071098

Adjacent sequences: A013759 A013760 A013761 * A013763 A013764 A013765

Keyword

nonn,easy

Author

N. J. A. Sloane

Status

approved