A135426 a(n) = 7^n * 8^(n^2).

1, 56, 200704, 46036680704, 675821419082285056, 634950507820721016852709376, 38179283319360245979311522664775942144, 146924980824268039790798000267293196637757037871104

Offset

0,2

Comments

Hankel transform of A132867.

Links

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

Formula

a(n) = 7^n*8^(n^2) = A000420(n)*A060760(n).

Mathematica

Table[7^n * 8^(n^2), {n, 0, 15}] (* G. C. Greubel, Oct 14 2016 *)

Prog

(Magma) [7^n*8^(n^2): n in [0..10]]; // Vincenzo Librandi, May 26 2011

Crossrefs

Cf. A000420, A060760, A132867.

Sequence in context: A135315 A376666 A376673 * A028670 A278608 A076181

Adjacent sequences: A135423 A135424 A135425 * A135427 A135428 A135429

Keyword

nonn

Author

Philippe Deléham, Dec 12 2007

Status

approved