A176493 A091137(n)/(n+1).

1, 1, 4, 6, 144, 240, 8640, 15120, 403200, 725760, 43545600, 79833600, 201180672000, 373621248000, 2092278988800, 3923023104000, 1883051089920000, 3556874280960000, 2688996956405760000, 5109094217170944000, 1605715325396582400000, 3065456530302566400000

Offset

0,3

Links

Table of n, a(n) for n=0..21.

Formula

a(n) = A174727(n)/A027760(n+1).

Crossrefs

Sequence in context: A377438 A355232 A377685 * A355230 A070155 A280778

Adjacent sequences: A176490 A176491 A176492 * A176494 A176495 A176496

Keyword

nonn

Author

Paul Curtz, Apr 19 2010

Status

approved