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 A243794 #20 May 12 2019 12:20:18 %S A243794 1,1,2,6,11,33,94,370,1627,8895,56416,414456,3382661 %N A243794 Number of simple connected graphs with n nodes that are planar and have no subgraph isomorphic to the open-bowtie graph. %H A243794 Travis Hoppe and Anna Petrone, <a href="https://github.com/thoppe/Encyclopedia-of-Finite-Graphs">Encyclopedia of Finite Graphs</a> %H A243794 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 A243794 F. Hüffner, <a href="https://github.com/falk-hueffner/tinygraph">tinygraph</a>, software for generating integer sequences based on graph properties, version 9766535. %Y A243794 Cf. A242791 (open-bowtie free graphs), A003094 (planar graphs). %K A243794 nonn,more %O A243794 1,3 %A A243794 _Travis Hoppe_ and _Anna Petrone_, Jun 16 2014 %E A243794 a(11)-a(13) added using tinygraph by _Falk Hüffner_, May 12 2019