A000936 - OEIS

%I #13 Oct 14 2015 14:53:32

%S 0,0,1,1,2,4,4,12,10,29,27,88,76,247,217,722,638,2134,1901,6413

%N Number of free planar polyenoids with n nodes and symmetry point group C_{2v}.

%D 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.

%H S. J. Cyvin, J. Brunvoll, E. Brendsdal, B. N. Cyvin and E. K. Lloyd, <a href="/A002057/a002057.pdf">Enumeration of polyene hydrocarbons: a complete mathematical solution</a>, J. Chem. Inf. Comput. Sci., 35 (1995) 743-751. [Annotated scanned copy]

%K nonn,more

%O 1,5

%A E. K. Lloyd (E.K.Lloyd(AT)soton.ac.uk)

%E a(16)-a(20) and title improved by _Sean A. Irvine_, Oct 14 2015