A018969 Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite AFT = AlPO4-52.

3, 7, 41, 185, 828, 4993, 32018, 201111, 1281355, 8331777, 55434489, 374585899, 2549602441, 17439189452, 119906615481

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: A089656 A018970 A018968 * A018971 A006383 A181148

Adjacent sequences: A018966 A018967 A018968 * A018970 A018971 A018972

Keyword

nonn,more

Author

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

Extensions

a(11)-a(16) from Sean A. Irvine, Mar 09 2019

Status

approved