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 A299028 #26 Mar 04 2018 19:50:32 %S A299028 12,20,32,92,472 %N A299028 Number of vertices in the iterated clique graphs of the 1-skeleton of Plato's icosahedron. %C A299028 It is known that the sequence of orders of the iterated clique graphs of the icosahedron goes to infinity. %H A299028 Miguel A. Pizaña, <a href="https://doi.org/10.1016/S0012-365X(02)00502-2">The icosahedron is clique divergent</a>, Discrete Mathematics, 262 (Feb. 2003), pp. 229-239. %H A299028 YAGS, <a href="http://xamanek.izt.uam.mx/yags/">YAGS - Yet Another Graph System</a> %e A299028 By definition, the zeroth iterated clique graph of a graph G is equal to G itself; since the icosahedron has 12 vertices, a(0)=12. %e A299028 The first iterated clique graph of the icosahedron has 20 vertices; hence, a(1)=20. %o A299028 (YAGS) K:=CliqueGraph;; g:=Icosahedron;; kg:=K(g);; Order(kg); %o A299028 # It outputs the number of vertices in the first iterated %o A299028 # clique graph of the icosahedron. %Y A299028 Cf. A299030, A063723, A053016. %K A299028 nonn,more %O A299028 0,1 %A A299028 _José Hernández_, Feb 01 2018