A019042 - OEIS

%I #9 Mar 27 2019 15:45:56

%S 3,6,20,140,966,5390,32776,218196,1427470,9221421,60963627,413293166,

%T 2835046599,19571741490,136026021144

%N Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite MER = Merlinoite K5Ca2[ Al9Si23O64 ] . 24 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 27 2019