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 A243241 #11 Feb 16 2025 08:33:22 %S A243241 0,0,1,4,19,109,852,11114,261077,11716566 %N A243241 Number of connected simple graphs on n nodes that are not strongly regular. %H A243241 Travis Hoppe and Anna Petrone, <a href="https://github.com/thoppe/Encyclopedia-of-Finite-Graphs">Encyclopedia of Finite Graphs</a> %H A243241 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/StronglyRegularGraph.html">Strongly Regular Graph</a> %F A243241 a(n) = A001349(n) - A088741(n). %K A243241 nonn,more %O A243241 1,4 %A A243241 _Travis Hoppe_ and _Anna Petrone_, Jun 01 2014