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 A008031 #17 Apr 10 2018 08:26:35 %S A008031 1,4,10,22,39,60,87,118,154,196,242,292,345,406,471,540,616,694,780, %T A008031 868,959,1060,1161,1270,1384,1500,1626,1750,1881,2020,2159,2308,2458, %U A008031 2614,2778,2940,3111,3286,3465,3652,3840,4036,4236,4438,4647,4860,5079,5302 %N A008031 Coordination sequence T1 for Zeolite Code ANA. %H A008031 R. W. Grosse-Kunstleve, <a href="/A008031/b008031.txt">Table of n, a(n) for n = 0..1000</a> %H A008031 R. W. Grosse-Kunstleve, <a href="/A005897/a005897.html">Coordination Sequences and Encyclopedia of Integer Sequences</a> %H A008031 Sean A. Irvine, <a href="/A008000/a008000_1.pdf">Generating Functions for Coordination Sequences of Zeolites, after Grosse-Kunstleve, Brunner, and Sloane</a> %H A008031 International Zeolite Association, <a href="http://www.iza-structure.org/databases/">Database of Zeolite Structures</a> %F A008031 G.f.: (1 +2*x +4*x^2 +8*x^3 +9*x^4 +11*x^5 +13*x^6 +12*x^7 +11*x^8 +11*x^9 +8*x^10 +3*x^11 +2*x^12 +3*x^13 -4*x^14 +2*x^15) / ((1 -x)^3*(1 +x^2)*(1 +x^4)*(1 +x +x^2 +x^3 +x^4)). - _Colin Barker_, Dec 18 2015 %F A008031 G.f.: (1 + 3*x + 6*x^2 + 12*x^3 + 17*x^4 + 20*x^5 + 24*x^6 + 25*x^7 + 23*x^8 + 22*x^9 + 19*x^10 + 11*x^11 + 5*x^12 + 5*x^13 - x^14 - 2*x^15 + 2*x^16) / (1-x) / (1-x^5) / (1-x^8). - _Sean A. Irvine_, Mar 13 2018 %K A008031 nonn %O A008031 0,2 %A A008031 _Ralf W. Grosse-Kunstleve_