This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A000936 #13 Oct 14 2015 14:53:32
%S A000936 0,0,1,1,2,4,4,12,10,29,27,88,76,247,217,722,638,2134,1901,6413
%N A000936 Number of free planar polyenoids with n nodes and symmetry point group C_{2v}.
%D A000936 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 A000936 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 A000936 nonn,more
%O A000936 1,5
%A A000936 E. K. Lloyd (E.K.Lloyd(AT)soton.ac.uk)
%E A000936 a(16)-a(20) and title improved by _Sean A. Irvine_, Oct 14 2015