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 A108997 #13 Feb 16 2025 08:32:58
%S A108997 1,4,12,24,36,52,68,76,78,72,64,56,40,12,4,1
%N A108997 Coordination sequence for the 120-cell: number of vertices n steps away from a given vertex on the regular 120-cell (hecatonicosachoron or {3,3,5}).
%C A108997 The adjacency graph of the 120-cell is a 4-regular graph of girth 5 (pentagonal cycles) and diameter 15. There are 30 distinct nonzero distances between vertices of the 120-cell in 4-space. - _Michael Somos_, Aug 09 2005
%D A108997 H. S. M. Coxeter, Introduction to geometry. 2nd edition, John Wiley & Sons, Inc., 1969, pp. 153, 404. MR0346644 (49 #11369)
%H A108997 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/120-Cell.html">120-Cell</a>
%H A108997 <a href="/index/Con#coordination_sequences">Index entries for coordination sequences</a>
%Y A108997 Cf. A118785, A329499.
%K A108997 fini,full,nonn
%O A108997 0,2
%A A108997 _Andrew Weimholt_, Jul 29 2005