A127233 a(n) = n!*(n*(n+1)/2)!.

1, 1, 12, 4320, 87091200, 156920924160000, 36785478363630796800000, 1536637256843037856927580160000000, 14998770936168817088309737749441675264000000000, 43408511507665453002645192043544271642563569306828800000000000

Offset

0,3

Links

Table of n, a(n) for n=0..9.

Maple

seq(n!*(n*(n+1)/2)!, n=0..9); # Emeric Deutsch, Jan 20 2007

Mathematica

Table[n!((n(n+1))/2)!, {n, 0, 10}] (* Harvey P. Dale, Aug 27 2021 *)

Crossrefs

Cf. A127234, A127236.

Sequence in context: A307944 A105067 A096732 * A169657 A287889 A288967

Adjacent sequences: A127230 A127231 A127232 * A127234 A127235 A127236

Keyword

nonn

Author

Artur Jasinski, Jan 09 2007

Extensions

More terms from Emeric Deutsch, Jan 20 2007

Status

approved