A123356 Kekulé numbers for certain benzenoids (see the Cyvin-Gutman book for details).

1, 4, 50, 805, 15218, 326053, 7736092, 199806100

Offset

0,2

Links

Table of n, a(n) for n=0..7.

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)

Crossrefs

Sequence in context: A215792 A280358 A114480 * A234870 A139087 A349655

Adjacent sequences: A123353 A123354 A123355 * A123357 A123358 A123359

Keyword

nonn

Author

N. J. A. Sloane, Oct 10 2006

Status

approved