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A013764
a(n) = 19^(3*n + 1).
1
19, 130321, 893871739, 6131066257801, 42052983462257059, 288441413567621167681, 1978419655660313589123979, 13569980418174090907801371961, 93076495688256089536609610280499
OFFSET
0,1
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
KEYWORD
nonn,easy
STATUS
approved