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 A331065 #6 Jan 08 2020 21:08:55 %S A331065 1,3,6,9,9,6,3,1 %N A331065 Coordination sequence for first kind of trivalent vertex in 1-skeleton of pentagonal icositetrahedron. %C A331065 Computed by Tom Karzes (see link). %H A331065 Tom Karzes, <a href="/A298808/a298808.html">Polyhedron Coordination Sequences</a> %Y A331065 Cf. A331066, A331067. %K A331065 nonn,fini,full %O A331065 0,2 %A A331065 _N. J. A. Sloane_, Jan 08 2020