%I A119708
%S A119708 0,0,1,1,0,1,1,0,1,4,0,3,4,0,3,12,0,6,19,0,10,41,0,16,72,0,28,149,0,
%T A119708 50,72,0,87,557,0
%N A119708 Number of free hexagonal polygons of symmetry class D_(3h) and area n.
%D A119708 Markus Voege, Anthony J. Guttmann and Iwan Jensen, "On the number of 
               benzenoid hydrocarbons", J. Chem. Inf. Comput. Sci., (2002), vol. 
               42, 456-466.
%Y A119708 Cf. A121212, A121211, A121210, A120991.
%Y A119708 Sequence in context: A086165 A096303 A021252 this_sequence A106142 A092512 
               A060568
%Y A119708 Adjacent sequences: A119705 A119706 A119707 this_sequence A119709 A119710 
               A119711
%K A119708 nonn
%O A119708 1,10
%A A119708 N. J. A. Sloane (njas(AT)research.att.com), Aug 27 2006