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 A331068 #6 Jan 08 2020 21:15:26 %S A331068 1,3,6,12,15,12,15,18,6,3,1 %N A331068 Coordination sequence for first kind of trivalent vertex in 1-skeleton of pentagonal hexecontahedron. %C A331068 Computed by Tom Karzes (see link). %H A331068 Tom Karzes, <a href="/A298808/a298808.html">Polyhedron Coordination Sequences</a> %Y A331068 Cf. A331069, A331070. %K A331068 nonn,fini,full %O A331068 0,2 %A A331068 _N. J. A. Sloane_, Jan 08 2020