A019057 Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite PHI = Phillipsite K2(Ca,Na2)2[ Al6Si10O32 ] . 12 H2O.

3, 6, 20, 128, 918, 5880, 35034, 214132, 1386698, 9208945, 61708281, 417010747, 2848446737, 19651953235, 136664775342

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: A238474 A019017 A019049 * A019058 A019050 A019051

Adjacent sequences: A019054 A019055 A019056 * A019058 A019059 A019060

Keyword

nonn,more

Author

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

Extensions

a(11)-a(16) from Sean A. Irvine, Mar 29 2019

Status

approved