id:A115506 - OEIS Search Results

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Number of permutations where every element in binary notation has ones at the same or adjacent positions of previous element's binary ones.

+0
3

1, 2, 6, 8, 24, 168, 840, 1008, 4032, 32160, 192960, 1297440, 9082080, 126846720, 1141620480, 1243468800, 4490307360, 53812332000, 526257365760, 3736568586240 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`Suggested by Leroy Quet.`
	CROSSREFS	`Cf. A115507, A115508.` `Adjacent sequences: A115503 A115504 A115505 this_sequence A115507 A115508 A115509` `Sequence in context: A122758 A122756 A116083 this_sequence A057852 A056188 A020696`
	KEYWORD	`nonn`
	AUTHOR	`Max Alekseyev (maxal(AT)cs.ucsd.edu), Jan 31 2006`

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Last modified May 16 23:01 EDT 2008. Contains 139884 sequences.

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