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Structure counts for certain radical benzenoidal structures (see Cash and Dias paper for precise definition).
8

%I #8 Nov 20 2023 00:03:43

%S 20,999,189792,153915460

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

%H Gordon G. Cash and Jerry Ray Dias, <a href="https://doi.org/10.1023/A:1015194511140">Computation, Properties and Resonance Topology of Benzenoid Monoradicals and Polyradicals and the Eigenvectors Belonging to Their Zero Eigenvalues</a>, J. Math. Chem., 30 (2001), 429-444.

%Y Cf. A008793, A128476-A128484.

%K nonn,more

%O 0,1

%A _N. J. A. Sloane_, May 08 2007