login
A161563
Factorials of double factorials.
1
1, 1, 2, 6, 40320, 1307674368000, 12413915592536072670862289047373375038521486354677760000000000
OFFSET
0,3
COMMENTS
As of version 7, Mathematica parses n!!! as (n!!)!. This sequence is not to be confused with the triple factorials A007661 or A161474 which are usually denoted n!!!.
MATHEMATICA
lst={}; Do[AppendTo[lst, n!!! ], {n, 0, 9}]; lst
(* alternately *) Array[ #!!!&, 9, 0]
CROSSREFS
Sequence in context: A337096 A005607 A184391 * A135408 A165710 A151995
KEYWORD
nonn
AUTHOR
EXTENSIONS
Corrected by Charles R Greathouse IV, Nov 11 2009
Offset set to 0 by Alois P. Heinz, Jan 12 2022
STATUS
approved