A135320 a(n) = 9^n * 8^(n^2).

1, 72, 331776, 97844723712, 1846757322198614016, 2230808147575757441788280832, 172462464674787958108367218731066064896, 853310183691766528293183623126485287871181154680832

Offset: 0

Author

Philippe Deléham, Dec 06 2007

Keywords

• nonn
• easy

Comments

Hankel transform of A130980 .

Links

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

Programs

Magma

[9^n*8^(n^2): n in [0..10]]; // Vincenzo Librandi, May 31 2011

Mathematica

Table[9^n*8^(n^2), {n,0,10}] (* G. C. Greubel, Oct 09 2016 *)

PARI

a(n)=9^n*8^(n^2) \\ Charles R Greathouse IV, Oct 09 2016

Formula

a(n) = 9^n * 8^(n^2) = A001019(n) * A060760(n).

Extensions

Corrected a(5), Vincenzo Librandi, May 31 2011