%I #12 Apr 10 2018 08:26:36
%S 1,4,9,17,30,48,68,87,109,142,184,224,255,287,338,406,470,515,555,620,
%T 712,802,865,915,992,1104,1218,1301,1365,1456,1586,1720,1821,1901,
%U 2010,2160,2312,2427,2521,2650,2824,2996,3123,3227,3374,3574,3770,3911
%N Coordination sequence T2 for Zeolite Code SAS.
%H R. W. Grosse-Kunstleve, <a href="/A057313/b057313.txt">Table of n, a(n) for n = 0..1000</a>
%H R. W. Grosse-Kunstleve, <a href="/A005897/a005897.html">Coordination Sequences and Encyclopedia of Integer Sequences</a>
%H Sean A. Irvine, <a href="/A008000/a008000_1.pdf">Generating Functions for Coordination Sequences of Zeolites, after Grosse-Kunstleve, Brunner, and Sloane</a>
%H International Zeolite Association, <a href="http://www.iza-structure.org/databases/">Database of Zeolite Structures</a>
%F G.f.: (1 + x) * (1 + x + 2*x^2 + 4*x^3 + 6*x^4 + 5*x^5 + 6*x^6 + 5*x^7 + 6*x^8 + 4*x^9 + 2*x^10 + x^11 + x^12) / ((1 - x)^3 * (1 - x + x^2) * (1 + x + x^2 + x^3 + x^4)^2). - _Colin Barker_, Dec 20 2015
%K nonn
%O 0,2
%A _Ralf W. Grosse-Kunstleve_