A033636 a(n) = (n-1)! * Product_{i=1..n-1} ((2*n)!-2*i-1).

1, 21, 1025310, 393143628567690, 4161601591128480023923529880, 3025979870886810157320547152897281546399520600, 316069513961213168272637175554794298273860325049869267706740636689200

Offset

1,2

References

Barry Simon, Representations of Finite and Compact Groups, AMS, p. 233.

Links

Table of n, a(n) for n=1..7.

Mathematica

Table[(n - 1)!*Product[(2 n)! - 2 i - 1, {i, n - 1}], {n, 7}] (* Wesley Ivan Hurt, May 07 2014 *)

Crossrefs

Sequence in context: A143736 A189252 A173518 * A138080 A013814 A013898

Adjacent sequences: A033633 A033634 A033635 * A033637 A033638 A033639

Keyword

nonn,easy

Author

N. J. A. Sloane, Dec 11 1999

Status

approved