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 A331066 #5 Jan 08 2020 21:09:43 %S A331066 1,3,7,9,8,7,3 %N A331066 Coordination sequence for second kind of trivalent vertex in 1-skeleton of pentagonal icositetrahedron. %C A331066 Computed by Tom Karzes (see link). %H A331066 Tom Karzes, <a href="/A298808/a298808.html">Polyhedron Coordination Sequences</a> %Y A331066 Cf. A331065, A331067. %K A331066 nonn,fini,full %O A331066 0,2 %A A331066 _N. J. A. Sloane_, Jan 08 2020