A120779 Number of monocyclic skeletons with n carbon atoms and a ring size of 6.

1, 1, 5, 12, 40, 106, 317, 868, 2462, 6778, 18801, 51561, 141583, 386865, 1056815, 2880894, 7850318, 21373466, 58182244, 158342918, 430954506, 1173001715, 3193466631, 8696388412, 23689689323, 64555962710, 175989086913, 479971320862, 1309581740793, 3574715516111

Offset: 6

Author

Parthasarathy Nambi, Aug 13 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).

Links

• Andrew Howroyd, Table of n, a(n) for n = 6..200

Crossrefs

Column k=6 of A305059.

Extensions

More terms from N. J. A. Sloane, Aug 27 2006

Terms a(26) and beyond from Andrew Howroyd, May 24 2018