A121330 Number of bridged bicyclic skeletons with n carbon atoms (see Parks et al. for precise definition).

0, 0, 0, 8, 9, 53, 251, 1053, 4078, 14945, 52586, 179411, 597480, 1951618, 6274858, 19912475, 62497879, 194330213, 599408935, 1836028197, 5589730484

Offset: 5

Author

N. J. A. Sloane, Aug 27 2006

Keywords

• nonn

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).