A135427 a(n) = 8^n * 9^(n^2).

1, 72, 419904, 198359290368, 7589970693537140736, 23524081260686625628823519232, 5905684770308534937017423724484399202304, 120091666484242114100641836801136909254418910442160128

Offset

0,2

Comments

Hankel transform of A132869.

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..30

Formula

a(n) = 8^n*9^(n^2) = A001018(n)*A060761(n).

Mathematica

Table[8^n * 9^(n^2), {n, 0, 15}] (* G. C. Greubel, Oct 14 2016 *)

Prog

(Magma) [8^n*9^(n^2): n in [0..10]]; // Vincenzo Librandi, May 26 2011

Crossrefs

Cf. A001018, A060761, A132869.

Sequence in context: A290182 A008703 A135320 * A028671 A261815 A159440

Adjacent sequences: A135424 A135425 A135426 * A135428 A135429 A135430

Keyword

nonn

Author

Philippe Deléham, Dec 12 2007

Status

approved