A018978 Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite APC = AlPO4-C [ Al16P16O64 ] (1,2).

3, 5, 23, 137, 986, 6175, 36845, 230163, 1516136, 10187120, 69032358, 472511657, 3269424682, 22836070332, 160753767836

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: A155778 A209028 A178068 * A100703 A352691 A137086

Adjacent sequences: A018975 A018976 A018977 * A018979 A018980 A018981

Keyword

nonn,more

Author

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

Extensions

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

Status

approved