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%I #7 Apr 04 2026 07:39:09
%S 2,9,58,333,1907,10552,57019,300833
%N Counts of Kekulean pericondensed planar benzenoid hydrocarbons C_{4n-2}H_{2n}.
%H Jerry Ray Dias, <a href="https://doi.org/10.1007/s10910-007-9343-6">Isomer enumeration of practical benzenoids</a>, J. Math. Chem., 44 (2008), 711-724.
%K nonn,more
%O 6,1
%A _N. J. A. Sloane_, Sep 18 2008