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 A243552 #13 Sep 14 2014 23:51:45 %S A243552 1,1,2,6,8,25,77,333,1668,11355 %N A243552 Number of simple connected graphs with n nodes that have no subgraph isomorphic to the bowtie graph or bull graph. %H A243552 Travis Hoppe and Anna Petrone, <a href="https://github.com/thoppe/Encyclopedia-of-Finite-Graphs">Encyclopedia of Finite Graphs</a> %H A243552 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 A243552 Cf. A242792 (no bowtie subgraphs), A244427 (no bull subgraphs). %K A243552 nonn,more %O A243552 1,3 %A A243552 _Travis Hoppe_ and _Anna Petrone_, Jun 06 2014