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%I #14 Oct 15 2015 14:30:40
%S 1,5,24,109,465,1943,7827,31095,121356,469235,1797376,6844290,25928036
%N Number of free nonplanar polyenoids with n nodes.
%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]
%F a(n) = A000207(n) - A000942(n). - _Sean A. Irvine_, Oct 15 2015
%K nonn,more
%O 7,2
%A E. K. Lloyd (E.K.Lloyd(AT)soton.ac.uk)
%E a(16)-a(19) from _Sean A. Irvine_, Oct 15 2015
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