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 A287482 #13 Feb 16 2025 08:33:46 %S A287482 0,0,0,0,1,8,70,724,10975,271378,12152603,1029799448,166102803505, %T A287482 50667847301581 %N A287482 Number of disconnected simple non-chordal graphs on n vertices. %H A287482 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/ChordalGraph.html">Chordal Graph</a> %F A287482 a(n) = A287481(n) - A241843(n). %Y A287482 Cf. A287481 (not-necessarily connected non-chordal graphs). %Y A287482 Cf. A241843 (connected non-chordal graphs). %K A287482 nonn,more %O A287482 1,6 %A A287482 _Eric W. Weisstein_, May 25 2017 %E A287482 a(11)-a(14) using formula by _Falk Hüffner_, Aug 10 2017