A013764 a(n) = 19^(3*n + 1).

19, 130321, 893871739, 6131066257801, 42052983462257059, 288441413567621167681, 1978419655660313589123979, 13569980418174090907801371961, 93076495688256089536609610280499

Offset

0,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..90

Tanya Khovanova, Recursive Sequences

Index entries for linear recurrences with constant coefficients, signature (6859).

Formula

a(n) = 6859*a(n-1), a(0)= 19. - Vincenzo Librandi, May 24 2011

Mathematica

NestList[6859#&, 19, 20] (* Harvey P. Dale, May 17 2018 *)

Prog

(Magma) [19^(3*n+1): n in [0..15]]; // Vincenzo Librandi, May 24 2011
(PARI) a(n)=19^(3*n+1) \\ Charles R Greathouse IV, Jul 10 2016

Crossrefs

Sequence in context: A098970 A172751 A350755 * A078353 A347813 A177818

Adjacent sequences: A013761 A013762 A013763 * A013765 A013766 A013767

Keyword

nonn,easy

Author

N. J. A. Sloane

Status

approved