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A107908
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(1/720)(n+1)(n+2)^2*(n+3)^2*(n+4)(3n+5).
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0
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1, 16, 110, 490, 1666, 4704, 11592, 25740, 52635, 100672, 182182, 314678, 522340, 837760, 1303968, 1976760, 2927349, 4245360, 6042190, 8454754, 11649638, 15827680, 21229000, 28138500, 36891855, 47882016, 61566246, 78473710
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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COMMENTS
| Kekule numbers for certain benzenoids.
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REFERENCES
| S. J. Cyvin and I. Gutman, Kekule structures in benzenoid hydrocarbons, Lecture Notes in Chemistry, No. 46, Springer, New York, 1988 (see p. 167).
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MAPLE
| a:=n->(1/720)*(n+1)*(n+2)^2*(n+3)^2*(n+4)*(3*n+5): seq(a(n), n=0..33);
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CROSSREFS
| Sequence in context: A155871 A120668 A053526 * A177046 A144449 A000143
Adjacent sequences: A107905 A107906 A107907 * A107909 A107910 A107911
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KEYWORD
| nonn
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AUTHOR
| Emeric Deutsch (deutsch(AT)duke.poly.edu), Jun 12 2005
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