id:A005983 - OEIS Search Results

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Number of 4 up, 4 down, 4 up, ... permutations of length 2n+1.
(Formerly M5347)

+0
1

1, 70, 26599, 33757360, 107709888805, 726401013530416, 9197888739246870571, 200656681438694771057920, 7065183006232334215872360169 (list; graph; listen)

	OFFSET	`1,2`
	REFERENCES	`P. R. Stein, personal communication.`
	CROSSREFS	`Sequence in context: A007099 A004109 A002829 this_sequence A014608 A075405 A066789` `Adjacent sequences: A005980 A005981 A005982 this_sequence A005984 A005985 A005986`
	KEYWORD	`nonn`
	AUTHOR	`njas`

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Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.

AT&T Labs Research