A069134 (n!*(3*n))^2.

0, 9, 144, 2916, 82944, 3240000, 167961600, 11202105600, 936404582400, 95996101017600, 11851370496000000, 1735159154319360000, 297357522512117760000, 58977973614365245440000, 13406496061357723484160000, 3462774811766503833600000000

Offset

0,2

Links

Table of n, a(n) for n=0..15.

Mathematica

Table[(n!(3n))^2, {n, 0, 15}]

Prog

(PARI) a(n)=(n!*(3*n))^2; \\ Joerg Arndt, Jun 29 2013

Crossrefs

Sequence in context: A134176 A325173 A067415 * A034829 A162993 A094594

Adjacent sequences: A069131 A069132 A069133 * A069135 A069136 A069137

Keyword

nonn

Author

Adam Gravit (Trojan313(AT)aol.com), Apr 07 2002

Extensions

More terms from Robert G. Wilson v, Apr 08 2002

Status

approved