A019119 - OEIS

%I #12 Jan 15 2025 03:04:51

%S 0,1,4,2,6,24,28,70,220,418,1079,3229,7816,20030,54017,137231,351289,

%T 913028,2360630,6135502,16039333,42102137,110891643,292830804,

%U 775990286,2060703746,5481264472,14616590748,39049205927

%N Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite EPI = Epistilbite Ca3[Al6Si18O48].16H2O starting with a T1 atom.

%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(21)-a(31) from _Sean A. Irvine_, Apr 06 2019