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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. 0
2, 8, 34, 162, 1080, 6383, 41775, 273618, 1839706, 12583014, 87182465, 611826394, 4336470628, 31017292666, 223585685378 (list; graph; refs; listen; history; text; internal format)
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 * A030857 A030894 A030919

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

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Last modified January 27 21:53 EST 2020. Contains 331300 sequences. (Running on oeis4.)