id:A038143 - OEIS Search Results

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Hexagonal cata-condensed helicenes with n cells (non-planar cata-fused benzenoid hydrocarbons).

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0, 0, 0, 0, 0, 1, 5, 35, 200, 1121 (list; graph; listen)

	OFFSET	`1,7`
	REFERENCES	`J. V. Knop et al., On the total number of polyhexes, Match, No. 16 (1984), 119-134.`
	CROSSREFS	`Equals A002216-A038142. Cf. A018190.` `Sequence in context: A166149 A002737 A123008 this_sequence A024062 A002074 A166176` `Adjacent sequences: A038140 A038141 A038142 this_sequence A038144 A038145 A038146`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.