A177315 - OEIS

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A177315

Number of permutations of 9 copies of 1..n with all adjacent differences <= 3 in absolute value.

1, 48620, 227873431500, 21452752266265320000, 230729955958244519983206000 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,2`
	COMMENTS	`a(n)=(9n)!/362880^n for n<=4`
	LINKS	`Table of n, a(n) for n=1..5.`
	CROSSREFS	`Sequence in context: A177313 A140924 A177314 * A172613 A172554 A048341` `Adjacent sequences: A177312 A177313 A177314 * A177316 A177317 A177318`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin May 06 2010`
	STATUS	`approved`

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Last modified May 18 06:08 EDT 2013. Contains 225419 sequences.