id:A151576 - OEIS Search Results

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Number of permutations of 1..n arranged in a circle with exactly 3 adjacent element pairs in decreasing order.

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0, 4, 55, 396, 2114, 9528, 38637, 146080, 526240, 1831644, 6217523, 20716164, 68059710, 221195824, 712856665 (list; graph; listen)

	OFFSET	`3,2`
	COMMENT	`Exactly 2 adjacent element pairs in decreasing order gives A027540(n-1)`
	CROSSREFS	`Related sequences: A151577-A151610.` `Sequence in context: A077658 A064439 A133218 this_sequence A073352 A099122 A001500` `Adjacent sequences: A151573 A151574 A151575 this_sequence A151577 A151578 A151579`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net) May 21 2009`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.