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 A079575 #22 Feb 16 2025 08:32:48 %S A079575 1,1,2,6,20,93,480,2960,19475,140851,1116717,10329833,121557264 %N A079575 Number of unlabeled, connected graphs on n vertices with no induced subgraph isomorphic to a bull-graph. %C A079575 A bull-graph is formed by adding a 5th vertex to a 4-path adjacent only to the middle two vertices on the path. %H A079575 C. De Simone and A. Sassano, <a href="https://doi.org/10.1016/0166-218X(93)90032-J">Stability number of bull- and chair-free graphs</a>, Discrete Appl. Math. 41 (1993) 121-129. %H A079575 Travis Hoppe and Anna Petrone, <a href="https://github.com/thoppe/Encyclopedia-of-Finite-Graphs">Encyclopedia of Finite Graphs</a> %H A079575 Falk Hüffner, <a href="https://github.com/falk-hueffner/tinygraph">tinygraph</a>, software for generating integer sequences based on graph properties, version ece94ef. %H A079575 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/BullGraph.html">Bull Graph</a> %Y A079575 Cf. A244427 (no bull subgraph). %K A079575 nonn,more %O A079575 1,3 %A A079575 _Jim Nastos_, Jan 24 2003 %E A079575 a(10)-a(13) added using tinygraph by _Falk Hüffner_, Jan 15 2016