A093002 Product of factorials of next n numbers.

1, 2, 144, 2073600, 17557585920000, 192668014586363904000000, 5116462645455544976110780416000000000

Offset

1,2

Comments

Essentially the same as A074319. [From R. J. Mathar, Sep 08 2008]

Links

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

Example

a(1)=2!=2, a(2)=3!*4!=144, a(3)=4!*5!*6!, a(4)=5!*6!*7!*8!.

Prog

(PARI) a(n)=prod(i=n+1, 2*n, i!)

Crossrefs

Sequence in context: A264153 A232998 A103207 * A074319 A188284 A306955

Adjacent sequences: A092999 A093000 A093001 * A093003 A093004 A093005

Keyword

nonn

Author

Amarnath Murthy, Mar 29 2004

Extensions

Corrected and extended by Mohammed Bouayoun (bouyao(AT)wanadoo.fr), Mar 29 2004

Status

approved