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A128482 Structure constants for certain radical benzenoidal structures (see Cash and Dias paper for precise definition). 0
20, 999, 59886, 5013752, 604073400, 105179890458, 26398415877712, 9510671755316374 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

REFERENCES

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.

LINKS

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

CROSSREFS

Cf. A008793, A128476-A128484.

Sequence in context: A269644 A349964 A347856 * A128476 A160132 A138915

Adjacent sequences:  A128479 A128480 A128481 * A128483 A128484 A128485

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, May 08 2007

STATUS

approved

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Last modified January 27 13:45 EST 2022. Contains 350607 sequences. (Running on oeis4.)