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 A057311 #13 Apr 10 2018 08:26:36 %S A057311 1,4,12,18,26,52,84,100,118,162,210,248,284,332,398,458,510,576,652, %T A057311 724,798,886,974,1056,1148,1252,1362,1462,1558,1680,1812,1928,2042, %U A057311 2174,2318,2456,2592,2736,2890,3046,3198,3364,3536,3696,3866,4054,4242 %N A057311 Coordination sequence T2 for Zeolite Code ASV. %H A057311 R. W. Grosse-Kunstleve, <a href="/A057311/b057311.txt">Table of n, a(n) for n = 0..1000</a> %H A057311 R. W. Grosse-Kunstleve, <a href="/A005897/a005897.html">Coordination Sequences and Encyclopedia of Integer Sequences</a> %H A057311 Sean A. Irvine, <a href="/A008000/a008000_1.pdf">Generating Functions for Coordination Sequences of Zeolites, after Grosse-Kunstleve, Brunner, and Sloane</a> %H A057311 International Zeolite Association, <a href="http://www.iza-structure.org/databases/">Database of Zeolite Structures</a> %F A057311 G.f.: (1 + x) * (1 + 2*x + 7*x^2 + x^3 + 12*x^4 + 10*x^5 + 18*x^6 - x^7 + 11*x^8 - 4*x^9 + 5*x^10 - 4*x^11 + 2*x^12) / ((1 - x)^3 * (1 + x^2) * (1 + x + x^2) * (1 + x + x^2 + x^3 + x^4)). - _Colin Barker_, Dec 20 2015 %K A057311 nonn %O A057311 0,2 %A A057311 _Ralf W. Grosse-Kunstleve_