id:A052145 - OEIS Search Results

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2*n*n!/(n+1) for n odd.

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1, 9, 200, 8820, 653184, 73180800, 11564467200, 2451889440000, 671854030848000, 231125690776780800, 97537253236899840000, 49549698749529538560000, 29829250083328819200000000, 20999962511521107738624000000, 17094073187896757112117657600000 (list; graph; listen)

	OFFSET	`1,2`
	REFERENCES	`R. P. Stanley, Enumerative Combinatorics, Cambridge, Vol. 2, 1999; see Problem 7.68(d).`
	CROSSREFS	`Sequence in context: A157594 A064756 A093708 this_sequence A012061 A012168 A012133` `Adjacent sequences: A052142 A052143 A052144 this_sequence A052146 A052147 A052148`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Jan 23 2000`

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

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