%I #6 Nov 20 2023 07:03:48
%S 20,999,59886,5013752,604073400,105179890458,26398415877712,
%T 9510671755316374
%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