id:A121139 - OEIS Search Results

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Numbers of isomers of unbranched a-4-catapolyheptagons - see Brunvoll reference for precise definition.

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1

1, 3, 11, 48, 228, 1080, 5112, 23920, 110848 (list; graph; listen)

	OFFSET	`2,2`
	REFERENCES	`J. Brunvoll, S. J. Cyvin and B. N. Cyvin, Isomer enumeration of polygonal systems..., J. Molec. Struct. (Theochem), 364 (1996), 1-13.`
	CROSSREFS	`Sequence in context: A020543 A111139 A126180 this_sequence A127087 A113060 A105151` `Adjacent sequences: A121136 A121137 A121138 this_sequence A121140 A121141 A121142`
	KEYWORD	`nonn`
	AUTHOR	`njas, Aug 13 2006`

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Last modified July 23 17:35 EDT 2008. Contains 142285 sequences.