id:A046723 - OEIS Search Results

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Number of semi-meanders of order n with 4 components.

+0
1

1, 4, 17, 66, 254, 956, 3584, 13256, 49052, 179552, 658560 (list; graph; listen)

	OFFSET	`4,2`
	LINKS	`P. Di Francesco, O. Golinelli and E. Guitter, Meander, folding and arch statistics.`
	CROSSREFS	`Cf. A000682.` `Sequence in context: A095252 A102207 A045992 this_sequence A030529 A081113 A114587` `Adjacent sequences: A046720 A046721 A046722 this_sequence A046724 A046725 A046726`
	KEYWORD	`nonn`
	AUTHOR	`njas`

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