A018972 Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite AFY = CoAPO-50 R3[Co3Al5P8O32].7H2O starting with a T2 atom.

3, 15, 30, 120, 723, 4212, 24408, 140430, 858489, 5526978, 36517929, 242905599, 1611175638, 10598041188, 69342515097

Offset

2,1

References

G. Thimm and W. E. Klee, Zeolite cycle sequences, Zeolites, 19, pp. 422-424, 1997.

Links

Table of n, a(n) for n=2..16.

G. Thimm, Cycle sequences of crystal structures

Crossrefs

Sequence in context: A271326 A106354 A228308 * A289962 A290069 A289936

Adjacent sequences: A018969 A018970 A018971 * A018973 A018974 A018975

Keyword

nonn,more

Author

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

Extensions

a(11)-a(16) from Sean A. Irvine, Mar 09 2019

Status

approved