A019250 - OEIS

%I #10 Apr 19 2019 18:16:28

%S 0,0,4,4,7,30,50,106,320,734,1606,4238,10735,25992,65243,166303,

%T 420964,1075250,2768641,7162869,18614509,48703066,128092492,338243964,

%U 897092356,2389751405,6386698936,17120652598,46028927058

%N Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite VET = VPI-8 [ Si17O34 ].

%D G. Thimm and W. E. Klee, Zeolite cycle sequences, Zeolites, 19, pp. 422-424, 1997.

%H G. Thimm, <a href="/thimm1.html">Cycle sequences of crystal structures</a>

%K nonn,more

%O 3,3

%A Georg Thimm (mgeorg(AT)ntu.edu.sg)

%E a(20)-a(31) from _Sean A. Irvine_, Apr 19 2019