A018973 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 ] .7 H2O.

4, 17, 40, 120, 584, 3223, 19196, 119786, 785597, 5268206, 35137379, 231694948, 1518635416, 9902694514, 64445484845

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: A273309 A145995 A275815 * A212575 A162148 A166781

Adjacent sequences: A018970 A018971 A018972 * A018974 A018975 A018976

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