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 A118785 #10 Feb 16 2025 08:33:01
%S A118785 1,12,32,42,32,1
%N A118785 Coordination sequence for 600-cell: number of vertices at graph distance n from a given vertex on the skeleton of the regular 600-cell (or {5,3,3}).
%D A118785 H. S. M. Coxeter, Regular Polytopes, 3rd ed., Dover, NY, 1973, page 153.
%H A118785 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/600-Cell.html">600-Cell</a>
%H A118785 <a href="/index/Con#coordination_sequences">Index entries for coordination sequences</a>
%Y A118785 Cf. A108997, A329499.
%K A118785 nonn,fini,full
%O A118785 0,2
%A A118785 _Eric W. Weisstein_, Apr 29 2006