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 A079457 #18 Sep 03 2021 05:55:37 %S A079457 1,1,2,6,20,103,706,7423,116476,2730992,92711668,4435835227 %N A079457 Number of unlabeled and connected graphs which are weakly chordal. (G is weakly chordal iff there are no induced cycles of size 5 or more in G nor in its complement.) %C A079457 Also known as the "weakly triangulated" graphs. Contains the chordal and cochordal graphs and is contained in the class of Perfect graphs. %H A079457 R. Hayward, <a href="http://dx.doi.org/10.1016/0095-8956(85)90050-4">Weakly triangulated graphs</a>, Journal Comb. Theory (Series B) 39 (1985) 200-208. %H A079457 R. Hayward, <a href="https://webdocs.cs.ualberta.ca/~hayward/papers/trcs0193.ps">Generating Weakly Triangulated Graphs</a>, Journal of Graph Theory 21 (1996) 67-69. %H A079457 R. Hayward, J. Spinrad, R. Sritharan, <a href="https://webdocs.cs.ualberta.ca/~hayward/papers/sodaHndl.ps">Weakly Chordal Graph Algorithms via Handles</a>, Proc. 11th SODA (2000) 42-49. %H A079457 F. Hüffner, <a href="https://github.com/falk-hueffner/tinygraph">tinygraph</a>, software for generating integer sequences based on graph properties, version 26b03c7 %F A079457 Inverse Euler transform of A123472. %K A079457 more,nonn %O A079457 1,3 %A A079457 _Jim Nastos_, Jan 13 2003 %E A079457 a(10)-a(12) added using tinygraph by _Falk Hüffner_, Jan 15 2016