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A121330 Number of bridged bicyclic skeletons with n carbon atoms (see Parks et al. for precise definition). 5
0, 0, 0, 8, 9, 53, 251, 1053, 4078, 14945, 52586, 179411, 597480, 1951618, 6274858, 19912475, 62497879, 194330213, 599408935, 1836028197, 5589730484 (list; graph; refs; listen; history; text; internal format)
OFFSET
5,4
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: A270013 A341526 A042847 * A152189 A042873 A342614
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Aug 27 2006
STATUS
approved

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Last modified July 20 20:50 EDT 2024. Contains 374459 sequences. (Running on oeis4.)