A128480 Structure counts for certain radical benzenoidal structures (see Cash and Dias paper for precise definition).

15345156, 105179890458, 2000179735422600

Offset

0,1

Links

Table of n, a(n) for n=0..2.

Gordon G. Cash and Jerry Ray Dias, Computation, Properties and Resonance Topology of Benzenoid Monoradicals and Polyradicals and the Eigenvectors Belonging to Their Zero Eigenvalues, J. Math. Chem., 30 (2001), 429-444.

Crossrefs

Cf. A008793, A128476-A128484.

Sequence in context: A269118 A234480 A186616 * A273355 A207797 A186050

Adjacent sequences: A128477 A128478 A128479 * A128481 A128482 A128483

Keyword

nonn,more,bref

Author

N. J. A. Sloane, May 08 2007

Status

approved