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%I #5 Jan 30 2014 03:37:52
%S 0,0,0,0,0,1,1,0,5,5,0,21,26,0,95,118,0,423,543,0,1923,2507,0,8869,
%T 11676,0,41410,54893,0,195353,260220,0,929423,1242820,0
%N Number of free hexagonal polygons of symmetry class C_(3h) and area n.
%D Markus Voege, Anthony J. Guttmann and Iwan Jensen, "On the number of benzenoid hydrocarbons", J. Chem. Inf. Comput. Sci., (2002), vol. 42, 456-466. See Table 3 under the C_(3h) column.
%K nonn
%O 1,9
%A _Parthasarathy Nambi_, Aug 19 2006
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