%I #2 Mar 30 2012 17:25:50
%S 1,7,12,70,36,235,167,867,517,2453,1262,6150,3642,16214,8863,37733,
%T 18149,75274,34783,138929,60330,239646,82662,335306,74046,311055,
%U 33940,152826,1635175
%N Number of benzenoids with 21 hexagons with C_(2v) symmetry containing n carbon atoms.
%D G. Brinkmann, G. Caporossi and P. Hansen, "A survey and new results on computer enumeration of polyhex and fusene hydrocarbons", J. Chem. Inf. Comput. Sci., vol. 43 (2003), pp. 842851. See Table 4 column 7 on page 846.
%e If n=59 then the number of benzenoids with 21 hexagons with C_(2v) symmetry is 1 which is the first term in the sequence.
%e If n=70 then the number of benzenoids with 21 hexagons with C_(2v) symmetry is 6150.
%K nonn
%O 59,2
%A _Parthasarathy Nambi_, Sep 09 2006
