A019060 Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite SOD = Sodalite Na6[ Al6Si6O24 ] . 2 NaCl.

2, 4, 32, 180, 1152, 6636, 40384, 266964, 1800360, 12127016, 82960512, 576835428, 4054304072, 28728093520, 205123982848

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: A320624 A133127 A122693 * A366365 A247014 A085055

Adjacent sequences: A019057 A019058 A019059 * A019061 A019062 A019063

Keyword

nonn,more

Author

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

Extensions

a(11)-a(16) from Sean A. Irvine, Mar 31 2019

Status

approved