A018953 Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite AFG = Afghanite (Na2,Ca,K2)12 [ Al24Si24O96 ].

2, 6, 34, 217, 1092, 6616, 39640, 254593, 1678272, 11264666, 77021822, 533716317, 3728816166, 26255378070, 186191393010

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: A279609 A253778 A346189 * A009199 A052824 A371768

Adjacent sequences: A018950 A018951 A018952 * A018954 A018955 A018956

Keyword

nonn,more

Author

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

Extensions

a(11)-a(16) from Sean A. Irvine, Mar 04 2019

Status

approved