A121113 - OEIS

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A121113

Edge-rooted tree-like octagonal systems (see Cyvin reference for precise definition).

0, 0, 6, 60, 522, 4452, 38130, 329832, 2884056, 25476936 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,3`
	REFERENCES	`S. J. Cyvin et al., Enumeration of tree-like octagonal systems: catapolyoctagons, ACH Models in Chem. 134 (1997), 55-70.`
	CROSSREFS	`Sequence in context: A179711 A061495 A102232 * A091710 A054880 A186656` `Adjacent sequences: A121110 A121111 A121112 * A121114 A121115 A121116`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Aug 13, 2006`

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Last modified February 17 14:50 EST 2012. Contains 206050 sequences.