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A030525 Number of polyhexes of class PF2. +0
9
0, 1, 2, 5, 10, 21, 41, 85, 167, 273, 608, 1421, 2823 (list; graph; listen)
OFFSET

4,3

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: A124146 A032468 A056599 this_sequence A116385 A000975 A032283

Adjacent sequences: A030522 A030523 A030524 this_sequence A030526 A030527 A030528

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.


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