A177281 - OEIS

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A177281

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

1, 2, 6, 24, 120, 720, 5040, 40320, 362880, 3628800, 32659200, 267805440, 2033498880, 14563332000, 100185340320, 672903217200, 4472291398032, 29721557854116, 199059839989844 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,2`
	COMMENTS	`a(n)=n! for n<=10`
	LINKS	`Table of n, a(n) for n=1..19.`
	CROSSREFS	`Sequence in context: A152705 A152702 A072133 * A173850 A154658 A179369` `Adjacent sequences: A177278 A177279 A177280 * A177282 A177283 A177284`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin May 06 2010`
	STATUS	`approved`

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Last modified May 25 03:00 EDT 2013. Contains 225634 sequences.