A123355 Kekulé numbers for certain benzenoids (see the Cyvin-Gutman book for details).

1, 3, 20, 155, 1315, 11957, 114972, 1157650, 12115220, 131015260

Offset: 0

Author

N. J. A. Sloane, Oct 10 2006

Keywords

• nonn

Links

• Cyvin S.J., Gutman I. (1988) Classes of Basic Benzenoids (III). In: Kekulé Structures in Benzenoid Hydrocarbons. Lecture Notes in Chemistry, vol 46. Springer, Berlin, Heidelberg (see p. 188)