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 A243330 #8 Sep 14 2014 23:45:24 %S A243330 1,0,1,1,2,2,4,4,9,20 %N A243330 Number of simple connected graphs with n nodes that are integral and Eulerian. %H A243330 Travis Hoppe and Anna Petrone, <a href="https://github.com/thoppe/Encyclopedia-of-Finite-Graphs">Encyclopedia of Finite Graphs</a> %H A243330 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, 2014 %Y A243330 Cf. A003049 (Eulerian graphs), A064731 (integral graphs). %K A243330 nonn,more %O A243330 1,5 %A A243330 _Travis Hoppe_ and _Anna Petrone_, Jun 03 2014