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A121327 Number of fused bicyclic skeletons with n carbon atoms (see Parks et al. for precise definition). +0
1
0, 1, 4, 17, 56, 187, 586, 1827, 5562, 16811, 50225, 149135, 439818, 1290975, 3772259, 10983684, 31878940, 92278466, 266481212, 767972142, 2209210615, 6345086203 (list; graph; listen)
OFFSET

4,3

REFERENCES

Camden A. Parks and James B. Hendrickson, Enumeration of monocyclic and bicyclic carbon skeletons, J. Chem. Inf. Comput. Sci., vol. 31, 334-339 (1991).

CROSSREFS

Adjacent sequences: A121324 A121325 A121326 this_sequence A121328 A121329 A121330

Sequence in context: A001585 A060262 A108140 this_sequence A027075 A034331 A107278

KEYWORD

nonn

AUTHOR

njas, Aug 27 2006

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Last modified October 11 13:47 EDT 2008. Contains 144830 sequences.


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