A121329 - OEIS

A121329

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

0, 1, 5, 23, 88, 313, 1054, 3431, 10880, 33867, 103836, 314757, 945067, 2816287, 8339029, 24562712, 72025232, 210399896, 612602926, 1778618989, 5589730484

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OFFSET

5,3

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

Table of n, a(n) for n=5..25.

CROSSREFS

Sequence in context: A147359 A034447 A255803 * A246175 A362764 A283224

Adjacent sequences: A121326 A121327 A121328 * A121330 A121331 A121332

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Aug 27 2006

STATUS

approved