A019031 Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite LOS = Losod Na12[Al12Si12O48].18H2O starting with a T2 atom.

2, 5, 30, 180, 1028, 6563, 41042, 262143, 1737014, 11717093, 80135236, 555094742, 3884459568, 27420679509, 195037451422

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: A371610 A209325 A019027 * A366455 A140786 A369726

Adjacent sequences: A019028 A019029 A019030 * A019032 A019033 A019034

Keyword

nonn,more,changed

Author

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

Extensions

a(11)-a(16) from Sean A. Irvine, Mar 25 2019

Status

approved