

A161563


Factorials of double factorials.


1




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!!!.


LINKS

Table of n, a(n) for n=0..6.


MATHEMATICA

lst={}; Do[AppendTo[lst, n!!! ], {n, 0, 9}]; lst
(* alternately *) Array[ #!!!&, 9, 0]


CROSSREFS

Sequence in context: A337096 A005607 A184391 * A135408 A165710 A151995
Adjacent sequences: A161560 A161561 A161562 * A161564 A161565 A161566


KEYWORD

nonn


AUTHOR

Vladimir Joseph Stephan Orlovsky, Jun 13 2009


EXTENSIONS

Corrected by Charles R Greathouse IV, Nov 11 2009
Offset set to 0 by Alois P. Heinz, Jan 12 2022


STATUS

approved



