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 A243785 #16 Feb 18 2025 15:34:41 %S A243785 0,0,1,4,12,56,267,1605,11909,109525 %N A243785 Number of unlabeled simple connected graphs with n nodes that are chordal but not integral. %H A243785 Travis Hoppe and Anna Petrone, <a href="https://github.com/thoppe/Encyclopedia-of-Finite-Graphs">Encyclopedia of Finite Graphs</a>. %H A243785 Travis Hoppe and Anna Petrone, <a href="http://arxiv.org/abs/1408.3644">Integer sequence discovery from small graphs</a>, arXiv preprint arXiv:1408.3644 [math.CO], 2014. %H A243785 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/ChordalGraph.html">Chordal Graph</a>. %H A243785 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/IntegralGraph.html">Integral Graph</a>. %F A243785 a(n) = A048192(n) - A243786(n). %Y A243785 Cf. A048192 (connected chordal graphs), A241842 (non-integral graphs). %Y A243785 Cf. A243786. %K A243785 nonn,more %O A243785 1,4 %A A243785 _Travis Hoppe_ and _Anna Petrone_, Jun 27 2014