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A176493 A091137(n)/(n+1). 0
1, 1, 4, 6, 144, 240, 8640, 15120, 403200, 725760, 43545600, 79833600, 201180672000, 373621248000, 2092278988800, 3923023104000, 1883051089920000, 3556874280960000, 2688996956405760000, 5109094217170944000, 1605715325396582400000, 3065456530302566400000 (list; graph; refs; listen; history; text; internal format)
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: A013165 A052672 A137025 * A070155 A280778 A197882

Adjacent sequences:  A176490 A176491 A176492 * A176494 A176495 A176496

KEYWORD

nonn

AUTHOR

Paul Curtz, Apr 19 2010

STATUS

approved

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Last modified March 27 12:40 EDT 2017. Contains 284176 sequences.