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A030520 Number of polyhexes of class PF2. +0
9
1, 5, 20, 82, 335, 1402 (list; graph; listen)
OFFSET

2,2

COMMENT

See reference for precise definition.

REFERENCES

S. J. Cyvin et al., Enumeration and classification of benzenoid systems 32. Normal perifusenes with two internal vertices, J. Chem. Inform. Comput. Sci., 32 (1992), 532-540.

CROSSREFS

Cf. A026106, A026118, A026298, A030519, A030520, A030525, A030529, A030532, A030534.

Sequence in context: A003947 A033131 A022021 this_sequence A056884 A006749 A002213

Adjacent sequences: A030517 A030518 A030519 this_sequence A030521 A030522 A030523

KEYWORD

nonn

AUTHOR

njas

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Last modified July 25 02:12 EDT 2008. Contains 142294 sequences.


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