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 A243565 #15 May 09 2019 14:51:59 %S A243565 1,1,2,4,11,38,159,882,6242,55316,578130,6774786 %N A243565 Number of simple connected graphs with n nodes that are planar and have no subgraph isomorphic to diamond graph. %H A243565 Travis Hoppe and Anna Petrone, <a href="https://github.com/thoppe/Encyclopedia-of-Finite-Graphs">Encyclopedia of Finite Graphs</a> %H A243565 F. Hüffner, <a href="https://github.com/falk-hueffner/tinygraph">tinygraph</a>, software for generating integer sequences based on graph properties, version 9766535. %Y A243565 Cf. A242790 (diamond free graphs), A003094 (planar graphs). %K A243565 nonn,more %O A243565 1,3 %A A243565 _Travis Hoppe_ and _Anna Petrone_, Jun 06 2014 %E A243565 a(11)-a(12) added using tinygraph by _Falk Hüffner_, May 09 2019