A190947 - OEIS

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A190947

Number of permutations of the n*(n+1)/2 numbers (i copies of i | i=1..n), with no element equal to another within a distance of 3

1, 0, 0, 0, 0, 13002, 11471355944, 101716608710405424, 18726065054096898027414348, 96678228204760902484487394741989088 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,6`
	LINKS	`Table of n, a(n) for n=1..10.`
	CROSSREFS	`Sequence in context: A145333 A190468 A028385 * A203910 A138762 A139777` `Adjacent sequences: A190944 A190945 A190946 * A190948 A190949 A190950`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin May 24 2011`
	STATUS	`approved`

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Last modified May 25 10:57 EDT 2013. Contains 225647 sequences.