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A123355 Benzenoids (see the Cyvin-Gutman book for details). +0
2
1, 3, 20, 155, 1315, 11957, 114972, 1157650, 12115220, 131015260 (list; graph; listen)
OFFSET

0,2

REFERENCES

S. J. Cyvin and I. Gutman, Kekule structures in benzenoid hydrocarbons, Lecture Notes in Chemistry, No. 46, Springer, New York, 1988 (see p. 188).

CROSSREFS

Sequence in context: A091168 A126596 A074560 this_sequence A012882 A063017 A145329

Adjacent sequences: A123352 A123353 A123354 this_sequence A123356 A123357 A123358

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Oct 10 2006

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Last modified December 19 12:50 EST 2009. Contains 171053 sequences.


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