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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: A033131 A022021 A165203 this_sequence A056884 A006749 A002213

Adjacent sequences: A030517 A030518 A030519 this_sequence A030521 A030522 A030523

KEYWORD

nonn

AUTHOR

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

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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