A159718 - OEIS

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A159718

Number of permutations of 2 indistinguishable copies of 1..n arranged in a circle with exactly 4 local maxima.

0, 0, 88, 33600, 3821760, 272509552, 15313310208, 750469872312 (list; graph; refs; listen; history; internal format)

	OFFSET	`2,3`
	CROSSREFS	`Sequence in context: A052069 A174499 A048919 * A157460 A093244 A079036` `Adjacent sequences: A159715 A159716 A159717 * A159719 A159720 A159721`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net) Apr 20 2009`

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Last modified February 16 02:51 EST 2012. Contains 205860 sequences.