id:A119837 - OEIS Search Results

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A119837

a(n)=(2n)!/n!-(2n)!/(n-1)!.

+0
2

1, 0, -12, -240, -5040, -120960, -3326400, -103783680, -3632428800, -141145804800, -6033983155200, -281585880576000, -14248245557145600, -777177030389760000, -45464856277800960000, -2839804869044183040000, -188644180586506444800000 (list; graph; listen)

	OFFSET	`0,3`
	COMMENT	`Row sums of number triangle A119836.`
	FORMULA	`a(n)=A001813(n)-2*A001814(n).`
	CROSSREFS	`Sequence in context: A012544 A009052 A012303 this_sequence A012538 A006588 A009150` `Adjacent sequences: A119834 A119835 A119836 this_sequence A119838 A119839 A119840`
	KEYWORD	`easy,sign`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), May 25 2006`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

AT&T Labs Research