%I A000942
%S A000942 1,1,1,3,4,12,26,77,204,624,1817,5585,17007,52803,164001
%N A000942 Number of free planar polyenoids with n nodes.
%D A000942 S. J. Cyvin, J. Brunvoll, E. Brendsdal, B. N. Cyvin and E. K. Lloyd, 
               Enumeration of polyene hydrocarbons: a complete mathematical solution, 
               J. Chem. Inf. Comput. Sci., 35 (1995) 743-751
%Y A000942 Sequence in context: A070765 A000577 A111758 this_sequence A000207 A002986 
               A147569
%Y A000942 Adjacent sequences: A000939 A000940 A000941 this_sequence A000943 A000944 
               A000945
%K A000942 nonn
%O A000942 1,4
%A A000942 E. K. Lloyd (E.K.Lloyd(AT)soton.ac.uk)