id:A006548 - OEIS Search Results

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(2*n)!-Sum ((-1)^(i+1)*binomial(n,i)*2^i*(2*n-1)!,i=1..n).

+0
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0, 24, 480, 40320, 2903040, 479001600, 74724249600, 20922789888000, 5690998849536000, 2432902008176640000, 1021818843434188800000, 620448401733239439360000, 372269041039943663616000000 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`4floor(n/2) (2n-1)!. - R. Stephan, Mar 08 2004`
	CROSSREFS	`Sequence in context: A114201 A052715 A052725 this_sequence A159877 A109143 A004383` `Adjacent sequences: A006545 A006546 A006547 this_sequence A006549 A006550 A006551`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

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