%I #10 Jul 30 2019 14:32:58
%S 3,30,204,1147,5855
%N Isomers of polyenes attached to benzene (see Cyvin et al. for precise definition).
%H B. N. Cyvin, E. Brendsdal, J. Brunvoll and S. J. Cyvin, <a href="https://hrcak.srce.hr/176546">Isomers of polyenes attached to benzene</a>, Croatica Chemica Acta, 68 (1995), 63-73.
%F a(n) = A121093(n)-A121097(n). - _R. J. Mathar_, Jul 26 2019
%K nonn
%O 5,1
%A _N. J. A. Sloane_, Aug 11 2006