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A030529 Number of polyhexes of class PF2. 11
0, 0, 1, 4, 17, 66, 269 (list; graph; refs; listen; history; internal format)
OFFSET

2,4

COMMENTS

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: A202555 A045992 A046723 * A081113 A114587 A033114

Adjacent sequences:  A030526 A030527 A030528 * A030530 A030531 A030532

KEYWORD

nonn

AUTHOR

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

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Last modified February 14 23:53 EST 2012. Contains 205689 sequences.