A018974 Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite AHT = AlPO4-H2 [ Al6P6O12 ] . 8H2 O.

1, 13, 28, 215, 902, 6262, 37975, 261155, 1720431, 11704764, 79439672, 548760055, 3820066453, 26878448816, 190482853291

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: A026054 A281476 A001291 * A018955 A240819 A293661

Adjacent sequences: A018971 A018972 A018973 * A018975 A018976 A018977

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