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A121163
Number of separated bicyclic skeletons with n carbon atoms (see Parks et al. for precise definition).
0
1, 7, 35, 147, 565, 2042, 7080, 23799, 78158, 251994, 800580, 2512782, 7807698, 24053791, 73565545, 223576181, 675753702, 2032603573, 6087798266
OFFSET
7,2
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: A169794 A240418 A211843 * A223621 A215510 A240423
KEYWORD
nonn
AUTHOR
Parthasarathy Nambi, Aug 13 2006
EXTENSIONS
More terms from N. J. A. Sloane, Aug 27 2006
STATUS
approved