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 A057312 #16 Apr 10 2018 08:26:36 %S A057312 1,4,10,19,30,45,65,90,118,145,175,212,257,306,350,394,446,510,581, %T A057312 644,703,769,850,942,1025,1101,1182,1279,1390,1492,1586,1684,1798, %U A057312 1927,2046,2157,2273,2406,2554,2689,2815,2948,3101,3270,3422,3562,3710 %N A057312 Coordination sequence T1 for Zeolite Code SAS. %H A057312 R. W. Grosse-Kunstleve, <a href="/A057312/b057312.txt">Table of n, a(n) for n = 0..1000</a> %H A057312 R. W. Grosse-Kunstleve, <a href="/A005897/a005897.html">Coordination Sequences and Encyclopedia of Integer Sequences</a> %H A057312 Sean A. Irvine, <a href="/A008000/a008000_1.pdf">Generating Functions for Coordination Sequences of Zeolites, after Grosse-Kunstleve, Brunner, and Sloane</a> %H A057312 International Zeolite Association, <a href="http://www.iza-structure.org/databases/">Database of Zeolite Structures</a> %F A057312 G.f.: (1 + x) * (1 + x^2) * (1 + x + 2*x^2 + 2*x^3 + 3*x^4 + 4*x^5 + 3*x^6 + 2*x^7 + 2*x^8 + x^9 + x^10) / ((1 - x)^3 * (1 - x + x^2) * (1 + x + x^2 + x^3 + x^4)^2). - _Colin Barker_, Dec 19 2015 %K A057312 nonn %O A057312 0,2 %A A057312 _Ralf W. Grosse-Kunstleve_