A019221 - OEIS

%I #12 Jan 17 2025 15:05:01

%S 1,1,1,0,0,8,24,90,240,492,1064,2452,5814,14766,38400,98846,252902,

%T 644456,1641944,4201380,10802792,27907392,72395562,188325960,

%U 491013312,1283101256,3359669780,8813687070,23166783438

%N Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite RSN = RUB-17 K4Na12[Zn8Si28O72].18H2O starting with a T3 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 3,6

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

%E a(21)-a(31) from _Sean A. Irvine_, Apr 17 2019