A018952 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, 33, 202, 1042, 6206, 38572, 252894, 1685564, 11367911, 77773792, 538226451, 3755728475, 26423241960, 187316098603

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: A162429 A279461 A243324 * A019028 A280769 A127114

Adjacent sequences: A018949 A018950 A018951 * A018953 A018954 A018955

Keyword

nonn,more

Author

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

Extensions

a(11)-a(16) from Sean A. Irvine, Mar 03 2019

Status

approved