The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.



Please make a donation to keep the OEIS running. We are now in our 56th year. In the past year we added 10000 new sequences and reached almost 9000 citations (which often say "discovered thanks to the OEIS").
Other ways to donate

(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A093002 Product of factorials of next n numbers. 1


%S 1,2,144,2073600,17557585920000,192668014586363904000000,

%T 5116462645455544976110780416000000000

%N Product of factorials of next n numbers.

%C Essentially the same as A074319. [From _R. J. Mathar_, Sep 08 2008]

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

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

%K nonn

%O 1,2

%A _Amarnath Murthy_, Mar 29 2004

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

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified November 27 02:30 EST 2020. Contains 338677 sequences. (Running on oeis4.)