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%I #6 Apr 08 2018 16:04:10
%S 1,4,9,18,31,45,63,86,111,140,172,210,253,296,346,396,445,503,561,619,
%T 687,762,836,918,1009,1090,1174,1269,1358,1449,1550,1659,1769,1884,
%U 2011,2128,2246,2377,2501,2628,2765,2908,3051,3198,3359,3508,3656
%N Coordination sequence T1 for Zeolite Code ETR.
%H R. W. Grosse-Kunstleve, <a href="/A301017/b301017.txt">Table of n, a(n) for n = 0..1000</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>
%K nonn
%O 0,2
%A _Sean A. Irvine_, Mar 17 2018