A018975 Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite AHT = AlPO4-H2 [ Al6P6O12 ] . 8H2 O.

2, 16, 32, 220, 872, 5886, 35346, 242546, 1605278, 10937906, 74343368, 513111965, 3568652234, 25077325748, 177535832330

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: A344016 A279034 A120069 * A012696 A012392 A009819

Adjacent sequences: A018972 A018973 A018974 * A018976 A018977 A018978

Keyword

nonn,more

Author

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

Extensions

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

Status

approved