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 A331058 #6 Jan 08 2020 19:58:19 %S A331058 1,3,6,6,6,3,1 %N A331058 Coordination sequence for trivalent vertex in 1-skeleton of deltoidal icositetrahedron. %C A331058 Computed by Tom Karzes (see link). %H A331058 Tom Karzes, <a href="/A298808/a298808.html">Polyhedron Coordination Sequences</a> %Y A331058 Cf. A331059. %K A331058 nonn,fini,full %O A331058 0,2 %A A331058 _N. J. A. Sloane_, Jan 08 2020