A018984 Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite ATO = AlPO4-31 [ Al18P18O72 ].

1, 9, 48, 180, 1322, 6853, 43804, 283623, 1885015, 13026464, 90977470, 644191249, 4594696120, 32969721835, 237966662872

Offset

2,2

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: A286437 A212107 A073979 * A055582 A359175 A054460

Adjacent sequences: A018981 A018982 A018983 * A018985 A018986 A018987

Keyword

nonn,more

Author

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

Extensions

a(11)-a(16) from Sean A. Irvine, Mar 13 2019

Status

approved