A018994 - OEIS

%I #10 Mar 17 2019 12:25:51

%S 3,6,24,189,1050,5130,29586,183822,1132146,7238454,48779613,335824479,

%T 2318832312,15998100231,110190414096

%N Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite BPH = Beryllophosphate-H Na7K7 [ Be14P14O56 ] . 20 H2O.

%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 2,1

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

%E a(11)-a(16) from _Sean A. Irvine_, Mar 17 2019