id:A010053 - OEIS Search Results

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4^n*(2*n+1)!*(n!)^2/(n+1).

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1, 12, 2560, 2903040, 10701766656, 98099527680000, 1888892391260160000, 68028459471234662400000, 4210629057689788455321600000, 419914246162041071241548267520000 (list; graph; listen)

	OFFSET	`0,2`
	MAPLE	`4^n(2n+1)!*(n!)^2/(n+1);`
	CROSSREFS	`Adjacent sequences: A010050 A010051 A010052 this_sequence A010054 A010055 A010056` `Sequence in context: A005249 A129206 A135398 this_sequence A092299 A006272 A111237`
	KEYWORD	`nonn,easy`
	AUTHOR	`Joe Keane (jgk(AT)jgk.org)`

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Last modified May 16 01:24 EDT 2008. Contains 139630 sequences.

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