A062782 a(n) = (n^2)! / (n^n).

1, 1, 6, 13440, 81729648000, 4963587213865915514880, 7973107998754741458076119859200000000, 738615790595351500616546025309298211371540807680000000000

Offset: 0

Author

Jason Earls, Jul 18 2001

Keywords

• easy
• nonn

Links

• Seiichi Manyama, Table of n, a(n) for n = 0..21

Crossrefs

Cf. A000312, A088020.

Programs

Mathematica

Join[{1},Table[(n^2)!/n^n,{n,8}]] (* Harvey P. Dale, Aug 10 2021 *)

PARI

for(n=0, 8, print1((n^2)!/(n^n), ", "))

Formula

a(n) = A088020(n)/A000312(n). - Seiichi Manyama, Mar 26 2019

Extensions

a(0)=1 prepended by Seiichi Manyama, Mar 26 2019