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%I #19 Apr 10 2018 08:26:35
%S 1,4,10,18,32,53,78,105,140,179,218,260,314,374,430,487,560,637,706,
%T 780,874,974,1062,1149,1260,1375,1474,1580,1714,1854,1974,2091,2240,
%U 2393,2522,2660,2834,3014,3166,3313,3500,3691,3850,4020,4234,4454,4638
%N Coordination sequence T2 for Zeolite Code AHT.
%D W. M. Meier, D. H. Olson and Ch. Baerlocher, Atlas of Zeolite Structure Types, 4th Ed., Elsevier, 1996.
%H R. W. Grosse-Kunstleve, <a href="/A009867/b009867.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 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 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 + 2*x + 4*x^2 + 4*x^3 + 10*x^4 + 11*x^5 + 14*x^6 + 13*x^7 + 20*x^8 + 13*x^9 + 14*x^10 + 12*x^11 + 14*x^12 + 4*x^13 + 2*x^14 + x^15 + 3*x^16 - x^17 - 2*x^18 + x^21) / ((1 - x)^3 * (1 + x) * (1 + x^2)^2 * (1 + x^4)^2). - _Colin Barker_, Dec 20 2015
%K nonn
%O 0,2
%A _Ralf W. Grosse-Kunstleve_