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 A008018 #14 Apr 10 2018 08:26:35 %S A008018 1,4,12,23,37,55,82,118,155,189,232,282,334,390,456,523,587,660,750, %T A008018 845,933,1015,1112,1224,1334,1446,1572,1691,1801,1925,2074,2234,2379, %U A008018 2513,2668,2834,2994,3158,3340,3519,3683,3864,4078,4295,4489,4667,4872,5102 %N A008018 Coordination sequence T4 for Zeolite Code AFO. %D A008018 W. M. Meier, D. H. Olson and Ch. Baerlocher, Atlas of Zeolite Structure Types, 4th Ed., Elsevier, 1996 %H A008018 R. W. Grosse-Kunstleve, <a href="/A008018/b008018.txt">Table of n, a(n) for n = 0..1000</a> %H A008018 R. W. Grosse-Kunstleve, <a href="/A005897/a005897.html">Coordination Sequences and Encyclopedia of Integer Sequences</a> %H A008018 R. W. Grosse-Kunstleve, G. O. Brunner and N. J. A. Sloane, <a href="http://neilsloane.com/doc/ac96cs/">Algebraic Description of Coordination Sequences and Exact Topological Densities for Zeolites</a>, Acta Cryst., A52 (1996), pp. 879-889. %H A008018 Sean A. Irvine, <a href="/A008000/a008000_1.pdf">Generating Functions for Coordination Sequences of Zeolites, after Grosse-Kunstleve, Brunner, and Sloane</a> %H A008018 International Zeolite Association, <a href="http://www.iza-structure.org/databases/">Database of Zeolite Structures</a> %K A008018 nonn %O A008018 0,2 %A A008018 _Ralf W. Grosse-Kunstleve_