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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; 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).

CROSSREFS

Sequence in context: A103315 A175931 A042847 * A152189 A042873 A033045

Adjacent sequences:  A121327 A121328 A121329 * A121331 A121332 A121333

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Aug 27 2006

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Last modified February 14 13:08 EST 2012. Contains 205623 sequences.