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A019029
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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 ].
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0
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2, 6, 34, 221, 1100, 6711, 40137, 256224, 1690933, 11342919, 77426134, 536305675, 3750315161, 26444298871, 187832060390
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OFFSET
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2,1
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REFERENCES
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G. Thimm and W. E. Klee, Zeolite cycle sequences, Zeolites, 19, pp. 422-424, 1997.
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LINKS
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Table of n, a(n) for n=2..16.
G. Thimm, Cycle sequences of crystal structures
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CROSSREFS
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Sequence in context: A018953 A009199 A052824 * A019032 A108424 A328884
Adjacent sequences: A019026 A019027 A019028 * A019030 A019031 A019032
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KEYWORD
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nonn,more
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AUTHOR
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Georg Thimm (mgeorg(AT)ntu.edu.sg)
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EXTENSIONS
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a(11)-a(16) from Sean A. Irvine, Mar 25 2019
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STATUS
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approved
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