A013889 a(n) = 18^(5*n + 4).

104976, 198359290368, 374813367582081024, 708235345355337676357632, 1338258845052394702439737982976, 2528731089327963353099650821015994368, 4778209346999261057189801002565550445953024, 9028751479390699717312017900815782025058563653632, 17060439875409325683441835040808675609525860005866110976

Offset

0,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..50

Tanya Khovanova, Recursive Sequences

Index entries for linear recurrences with constant coefficients, signature (1889568).

Formula

a(n) = 1889568*a(n-1), a(0)=104976. - Vincenzo Librandi, May 27 2011

Mathematica

18^(5*Range[0, 10] + 4) (* Paolo Xausa, May 30 2026 *)

Prog

(Magma) [18^(5*n+4): n in [0..10]]; // Vincenzo Librandi, May 27 2011
(PARI) a(n)=18^(5*n+4) \\ Charles R Greathouse IV, May 31 2026

Crossrefs

Cf. A001027.

Sequence in context: A138165 A202934 A203822 * A380232 A353553 A025308

Adjacent sequences: A013886 A013887 A013888 * A013890 A013891 A013892

Keyword

nonn,easy

Author

N. J. A. Sloane

Status

approved