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A019028
Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite LIO = Liottite (Ca,Na2,K2)9 [ Al18Si18O72 ].
0
2, 6, 33, 203, 1050, 6300, 39142, 255212, 1698526, 11430659, 78113783, 540745743, 3778368007, 26622561517, 188999975971
OFFSET
2,1
REFERENCES
G. Thimm and W. E. Klee, Zeolite cycle sequences, Zeolites, 19, pp. 422-424, 1997.
CROSSREFS
Sequence in context: A279461 A243324 A018952 * A280769 A127114 A138909
KEYWORD
nonn,more
AUTHOR
Georg Thimm (mgeorg(AT)ntu.edu.sg)
EXTENSIONS
a(11)-a(16) from Sean A. Irvine, Mar 25 2019
STATUS
approved