A019109 - OEIS

%I #10 Apr 05 2019 17:38:38

%S 0,0,6,0,3,51,42,117,453,615,1509,4665,9159,22542,61659,143013,359028,

%T 942234,2362140,6096888,16004478,41649720,109662291,290536845,

%U 769577400,2049110310,5470439130,14619639972,39172342518

%N Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite DDR = Deca-dodecasil 3R [ Si120O240 ]q R.

%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 05 2019