A014130 ((n+3)!/6)*product( 2*k+1, k=0..n).

1, 12, 300, 12600, 793800, 69854400, 8172964800, 1225944720000, 229251662640000, 52269379081920000, 14269540489364160000, 4594792037575259520000, 1723047014090722320000000, 744356310087192042240000000, 366967660872985676824320000000

Offset

0,2

Links

Table of n, a(n) for n=0..14.

Maple

f := n->((n+3)!/6)*product( '2*k+1', 'k'=0..n);

Mathematica

Table[(n+3)!/6 Product[2k+1, {k, 0, n}], {n, 0, 20}] (* Harvey P. Dale, Sep 27 2014 *)

Crossrefs

Sequence in context: A109867 A326437 A303068 * A309319 A358327 A054942

Adjacent sequences: A014127 A014128 A014129 * A014131 A014132 A014133

Keyword

nonn,easy

Author

N. J. A. Sloane.

Extensions

More terms from Harvey P. Dale, Sep 27 2014

Status

approved