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A018994
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.
0
3, 6, 24, 189, 1050, 5130, 29586, 183822, 1132146, 7238454, 48779613, 335824479, 2318832312, 15998100231, 110190414096
OFFSET
2,1
REFERENCES
G. Thimm and W. E. Klee, Zeolite cycle sequences, Zeolites, 19, pp. 422-424, 1997.
CROSSREFS
Sequence in context: A081072 A000717 A076020 * A018964 A304186 A288760
KEYWORD
nonn,more
AUTHOR
Georg Thimm (mgeorg(AT)ntu.edu.sg)
EXTENSIONS
a(11)-a(16) from Sean A. Irvine, Mar 17 2019
STATUS
approved