A151580 - OEIS

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A151580

Number of permutations of 1..n arranged in a circle with exactly 7 adjacent element pairs in decreasing order.

0, 8, 2223, 146080, 5007112, 116857368, 2112659718, 31852408056, 419567641380 (list; graph; refs; listen; history; internal format)

	OFFSET	`7,2`
	CROSSREFS	`Sequence in context: A189308 A017415 A046246 * A173175 A172957 A017547` `Adjacent sequences: A151577 A151578 A151579 * A151581 A151582 A151583`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net) May 21 2009`

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Last modified February 16 19:42 EST 2012. Contains 205948 sequences.