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 A243325 #13 Nov 27 2015 00:01:36 %S A243325 0,0,1,4,18,95,642,5962,71876,1052786 %N A243325 Number of simple connected graphs with n nodes that are planar and not integral. %H A243325 Travis Hoppe and Anna Petrone, <a href="https://github.com/thoppe/Encyclopedia-of-Finite-Graphs">Encyclopedia of Finite Graphs</a> %H A243325 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. %Y A243325 Cf. A003094 (planar graphs), A241842 (non-integral graphs). %K A243325 nonn,more %O A243325 1,4 %A A243325 _Travis Hoppe_ and _Anna Petrone_, Jun 03 2014