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 A008028 #14 Apr 10 2018 08:26:35 %S A008028 1,4,9,17,29,45,65,88,113,141,175,216,258,297,340,394,455,514,570,631, %T A008028 702,780,858,932,1008,1095,1192,1289,1380,1472,1576,1692,1809,1918, %U A008028 2025,2145,2280,2416,2543,2668,2805,2956,3110,3257,3399,3550,3718,3892,4057 %N A008028 Coordination sequence T3 for Zeolite Code AFT. %D A008028 W. M. Meier, D. H. Olson and Ch. Baerlocher, Atlas of Zeolite Structure Types, 4th Ed., Elsevier, 1996 %H A008028 R. W. Grosse-Kunstleve, <a href="/A008028/b008028.txt">Table of n, a(n) for n = 0..1000</a> %H A008028 R. W. Grosse-Kunstleve, <a href="/A005897/a005897.html">Coordination Sequences and Encyclopedia of Integer Sequences</a> %H A008028 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 A008028 Sean A. Irvine, <a href="/A008000/a008000_1.pdf">Generating Functions for Coordination Sequences of Zeolites, after Grosse-Kunstleve, Brunner, and Sloane</a> %H A008028 International Zeolite Association, <a href="http://www.iza-structure.org/databases/">Database of Zeolite Structures</a> %F A008028 G.f.: (1 + 4*x + 9*x^2 + 69*x^20 + 68*x^15 + 72*x^17 + 72*x^19 + 68*x^21 + 67*x^22 + 62*x^23 + 52*x^24 + 40*x^25 + 28*x^26 + 17*x^27 + 9*x^28 + 4*x^29 + x^30 + 28*x^4 + 40*x^5 + 52*x^6 + 62*x^7 + 67*x^8 + 68*x^9 + 69*x^10 + 72*x^11 + 74*x^12 + 72*x^13 + 69*x^14 + 69*x^16 + 74*x^18 + 17*x^3) / (1-x^4) / (1-x^5) / (1-x^21). - _Sean A. Irvine_, Mar 13 2018 %K A008028 nonn %O A008028 0,2 %A A008028 _Ralf W. Grosse-Kunstleve_