A018971 Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite AFX = SAPO-56 [Al23Si5P20O96] starting with a T1 atom.

3, 7, 41, 186, 838, 5219, 33542, 205666, 1279046, 8239377, 54805712, 371262259, 2532135179, 17336840918, 119240566040

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: A018970 A018968 A018969 * A381361 A006383 A181148

Adjacent sequences: A018968 A018969 A018970 * A018972 A018973 A018974

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