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 A243790 #20 Aug 15 2017 13:55:37 %S A243790 1,0,1,3,3,9,13,59,203,1651,15728 %N A243790 Number of simple connected graphs with n nodes that are Hamiltonian and have no subgraph isomorphic to the open-bowtie graph. %H A243790 Travis Hoppe and Anna Petrone, <a href="https://github.com/thoppe/Encyclopedia-of-Finite-Graphs">Encyclopedia of Finite Graphs</a> %H A243790 T. Hoppe and A. Petrone, <a href="http://arxiv.org/abs/1408.3644">Integer sequence discovery from small graphs</a>, arXiv preprint arXiv:1408.3644 [math.CO], 2014. %H A243790 F. Hüffner, <a href="https://github.com/falk-hueffner/tinygraph">tinygraph</a>, software for generating integer sequences based on graph properties, version a1db88e %Y A243790 Cf. A242791 (open-bowtie free graphs), A003216 (Hamiltonian graphs). %K A243790 nonn,more %O A243790 1,4 %A A243790 _Travis Hoppe_ and _Anna Petrone_, Jun 16 2014 %E A243790 a(11) added using tinygraph by _Falk Hüffner_, Aug 15 2017