A151605 - OEIS

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A151605

Number of permutations of 5 indistinguishable copies of 1..n arranged in a circle with exactly 4 adjacent element pairs in decreasing order.

0, 40, 127260, 25681280, 2620321725, 205881818220 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	CROSSREFS	`Sequence in context: A167061 A159404 A186166 * A159428 A115482 A111401` `Adjacent sequences: A151602 A151603 A151604 * A151606 A151607 A151608`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net) May 21 2009`

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Last modified February 16 06:25 EST 2012. Contains 205860 sequences.