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 A019456 #13 Apr 10 2018 08:26:36 %S A019456 1,4,9,18,32,54,83,113,149,191,234,281,342,399,459,537,611,678,763, %T A019456 861,947,1035,1151,1267,1367,1481,1611,1738,1862,1995,2140,2291,2443, %U A019456 2591,2751,2929,3094,3252,3439,3639,3816,3995,4211,4427,4618,4823,5055 %N A019456 Coordination sequence T1 for Zeolite Code CZP. %D A019456 W. M. Meier, D. H. Olson and Ch. Baerlocher, Atlas of Zeolite Structure Types, 4th Ed., Elsevier, 1996 %H A019456 R. W. Grosse-Kunstleve, <a href="/A019456/b019456.txt">Table of n, a(n) for n = 0..1000</a> %H A019456 R. W. Grosse-Kunstleve, <a href="/A005897/a005897.html">Coordination Sequences and Encyclopedia of Integer Sequences</a> %H A019456 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 A019456 Sean A. Irvine, <a href="/A008000/a008000_1.pdf">Generating Functions for Coordination Sequences of Zeolites, after Grosse-Kunstleve, Brunner, and Sloane</a> %H A019456 International Zeolite Association, <a href="http://www.iza-structure.org/databases/">Database of Zeolite Structures</a> %Y A019456 Cf. A019457, A019458. %K A019456 nonn %O A019456 0,2 %A A019456 _Ralf W. Grosse-Kunstleve_