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 A330564 #13 Jan 08 2020 19:47:41 %S A330564 1,6,9,9,6,1 %N A330564 Coordination sequence for 1-skeleton of small stellated dodecahedron with respect to a trivalent node (a valley). %C A330564 The coordination sequence with respect to a pentavalent node (a peak) is 1,5,10,10,5,1. Since this coordination sequence is a row of Pascal's triangle it does not have its own entry. %D A330564 H. M. Cundy and A. P. Rollett, Mathematical Models, Oxford, 1st. ed., corrected 1957, pp. 84-85. %H A330564 Tom Karzes, <a href="/A298808/a298808.html">Polyhedron Coordination Sequences</a> %Y A330564 Cf. A329500, A330555. %K A330564 nonn,fini,full %O A330564 0,2 %A A330564 _N. J. A. Sloane_, Jan 01 2020