A019145 Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite MEI = ZSM-18 Nan[AlnSi34-nO68].28H2O (n=2.1-5.7) starting with a T1 atom.

0, 3, 0, 6, 12, 18, 42, 69, 213, 522, 1290, 3021, 7515, 16005, 39396, 96558, 216372, 569388, 1339923, 3502602, 8844471, 22861068, 59433465, 154115181, 402895542, 1049644224, 2741689647, 7161115410, 18689797119, 48858332049

Offset

3,2

References

G. Thimm and W. E. Klee, Zeolite cycle sequences, Zeolites, 19, pp. 422-424, 1997.

Links

Table of n, a(n) for n=3..32.

G. Thimm, Cycle sequences of crystal structures

Crossrefs

Sequence in context: A077911 A057381 A144091 * A059684 A270509 A083350

Adjacent sequences: A019142 A019143 A019144 * A019146 A019147 A019148

Keyword

nonn,more

Author

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

Extensions

a(21)-a(32) from Sean A. Irvine, Apr 09 2019

Status

approved