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%I #6 Mar 05 2020 23:54:57
%S 0,0,2,6,32,132,600,2628,11768,52608,237266
%N Nonisomorphic catacondensed monoheptafusenes (see reference for precise definition).
%D B. N. Cyvin et al., A class of polygonal systems representing polycyclic conjugated hydrocarbons ..., Monat. f. Chemie, 125 (1994), 1327-1337 (see Table 1).
%D S. J. Cyvin et al., Enumeration and classification of certain polygonal systems... : annelated catafusenes, J. Chem. Inform. Comput. Sci., 34 (1994), 1174-1180.
%F See A044046 for g.f. and other formulas.
%Y Equals twice A044046.
%K nonn
%O 0,3
%A _N. J. A. Sloane_