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 A008006 #14 Apr 10 2018 08:26:35 %S A008006 1,4,12,24,40,59,84,115,150,186,230,282,336,390,452,520,592,667,746, %T A008006 833,928,1018,1112,1218,1328,1440,1558,1678,1806,1939,2072,2211,2360, %U A008006 2508,2660,2822,2986,3152,3328,3502,3680,3869,4060,4257,4462,4660,4866,5086 %N A008006 Coordination sequence T3 for Zeolite Code AEL. %D A008006 W. M. Meier, D. H. Olson and Ch. Baerlocher, Atlas of Zeolite Structure Types, 4th Ed., Elsevier, 1996 %H A008006 R. W. Grosse-Kunstleve, <a href="/A008006/b008006.txt">Table of n, a(n) for n = 0..1000</a> %H A008006 R. W. Grosse-Kunstleve, <a href="/A005897/a005897.html">Coordination Sequences and Encyclopedia of Integer Sequences</a> %H A008006 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 A008006 Sean A. Irvine, <a href="/A008000/a008000_1.pdf">Generating Functions for Coordination Sequences of Zeolites, after Grosse-Kunstleve, Brunner, and Sloane</a> %H A008006 International Zeolite Association, <a href="http://www.iza-structure.org/databases/">Database of Zeolite Structures</a> %K A008006 nonn %O A008006 0,2 %A A008006 _Ralf W. Grosse-Kunstleve_