A019023 Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite JBW = NaJ (Barrer and White) Na3 [ Al3Si3O12 ]. 1.5 H2O.

2, 8, 34, 162, 1080, 6383, 41775, 273618, 1839706, 12583014, 87182465, 611826394, 4336470628, 31017292666, 223585685378

Offset

2,1

Links

Table of n, a(n) for n=2..16.

Georg Thimm, Cycle sequences of crystal structures.

Georg Thimm, Personal website (archived).

Georg Thimm, A graph theoretical approach to the analysis, comparison, and enumeration of crystal structures, Dissertation, Goethe University Frankfurt, Germany, 2008.

Georg Thimm and W. E. Klee, Zeolite cycle sequences, Zeolites, 19(5-6) (1997), 422-424.

Crossrefs

Sequence in context: A046649 A174808 A109972 * A343523 A030857 A030894

Adjacent sequences: A019020 A019021 A019022 * A019024 A019025 A019026

Keyword

nonn,more

Author

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

Extensions

a(11)-a(16) from Sean A. Irvine, Mar 23 2019

Status

approved