A018967 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, 40, 181, 767, 4629, 31167, 202271, 1304340, 8492018, 56259299, 378024920, 2561925846, 17484177731, 120161533252

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: A368627 A018998 A018941 * A018942 A018943 A019024

Adjacent sequences: A018964 A018965 A018966 * A018968 A018969 A018970

Keyword

nonn,more

Author

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

Extensions

a(11)-a(16) from Sean A. Irvine, Mar 08 2019

Status

approved