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 A243563 #13 Jun 27 2014 15:09:16 %S A243563 0,0,1,3,10,35,162,964,7682,86994 %N A243563 Number of simple connected graphs with n nodes that are non-integral and have no subgraph isomorphic to diamond graph. %H A243563 Travis Hoppe and Anna Petrone, <a href="https://github.com/thoppe/Encyclopedia-of-Finite-Graphs">Encyclopedia of Finite Graphs</a> %Y A243563 Cf. A242790 (diamond-free graphs), A241842 (non-integral graphs). %K A243563 nonn,more %O A243563 1,4 %A A243563 _Travis Hoppe_ and _Anna Petrone_, Jun 06 2014