A018957 Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite AFO = AlPO4-41 [ Al20P20O80 ].

1, 12, 18, 213, 868, 6811, 40267, 283800, 1893581, 13245343, 92117860, 651848468, 4635906047, 33287875110, 240521004903

Offset

2,2

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: A231094 A258427 A166627 * A238922 A212128 A110932

Adjacent sequences: A018954 A018955 A018956 * A018958 A018959 A018960

Keyword

nonn,more

Author

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

Extensions

a(11)-a(16) from Sean A. Irvine, Mar 07 2019

Status

approved