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A121327 Number of fused bicyclic skeletons with n carbon atoms (see Parks et al. for precise definition). 0
0, 1, 4, 17, 56, 187, 586, 1827, 5562, 16811, 50225, 149135, 439818, 1290975, 3772259, 10983684, 31878940, 92278466, 266481212, 767972142, 2209210615, 6345086203 (list; graph; refs; listen; history; text; internal format)
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).
LINKS
CROSSREFS
Sequence in context: A213577 A255526 A264218 * A317757 A183924 A255271
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Aug 27 2006
STATUS
approved

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Last modified June 22 23:47 EDT 2024. Contains 373629 sequences. (Running on oeis4.)