A151608 - OEIS

A151608

Number of permutations of 6 indistinguishable copies of 1..n arranged in a circle with exactly 3 adjacent element pairs in decreasing order.

0, 400, 78900, 4232384, 164553580, 5706469776 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,2`
	LINKS	`Table of n, a(n) for n=1..6.`
	CROSSREFS	`Sequence in context: A187051 A231288 A210262 * A022232 A151652 A197441` `Adjacent sequences: A151605 A151606 A151607 * A151609 A151610 A151611`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin May 21 2009`
	STATUS	`approved`

Last modified March 30 19:10 EDT 2023. Contains 361622 sequences. (Running on oeis4.)