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 A009858 #15 Apr 10 2018 08:26:35 %S A009858 1,3,8,16,29,49,68,94,123,162,203,229,276,334,400,446,481,569,654,723, %T A009858 781,847,971,1064,1129,1229,1331,1463,1550,1645,1799,1901,2041,2141, %U A009858 2275,2469,2559,2716,2847,3003,3221,3324,3499,3645,3828,4083,4188,4380 %N A009858 Coordination sequence T4 for Zeolite Code -PAR. %D A009858 W. M. Meier, D. H. Olson and Ch. Baerlocher, Atlas of Zeolite Structure Types, 4th Ed., Elsevier, 1996. %H A009858 R. W. Grosse-Kunstleve, <a href="/A009858/b009858.txt">Table of n, a(n) for n = 0..1000</a> %H A009858 R. W. Grosse-Kunstleve, <a href="/A005897/a005897.html">Coordination Sequences and Encyclopedia of Integer Sequences</a> %H A009858 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 A009858 Sean A. Irvine, <a href="/A008000/a008000_1.pdf">Generating Functions for Coordination Sequences of Zeolites, after Grosse-Kunstleve, Brunner, and Sloane</a> %H A009858 International Zeolite Association, <a href="http://www.iza-structure.org/databases/">Database of Zeolite Structures</a> %K A009858 nonn %O A009858 0,2 %A A009858 _Ralf W. Grosse-Kunstleve_