A018977 Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite APC = AlPO4-C [Al16P16O64](1,2) starting from a T2 atom.

2, 7, 29, 138, 979, 6229, 38079, 238494, 1565844, 10497940, 71146182, 487223288, 3372020072, 23556434058, 165856581588

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: A307389 A104252 A373802 * A190736 A265000 A347431

Adjacent sequences: A018974 A018975 A018976 * A018978 A018979 A018980

Keyword

nonn,more,changed

Author

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

Extensions

a(11)-a(16) from Sean A. Irvine, Mar 10 2019

Status

approved