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A019031 Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite LOS = Losod Na12 [ Al12Si12O48 ] . 18 H2O. 0
2, 5, 30, 180, 1028, 6563, 41042, 262143, 1737014, 11717093, 80135236, 555094742, 3884459568, 27420679509, 195037451422 (list; graph; refs; listen; history; text; internal format)
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: A180826 A209325 A019027 * A140786 A129951 A127298

Adjacent sequences:  A019028 A019029 A019030 * A019032 A019033 A019034

KEYWORD

nonn,more

AUTHOR

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

EXTENSIONS

a(11)-a(16) from Sean A. Irvine, Mar 25 2019

STATUS

approved

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Last modified March 28 14:58 EDT 2020. Contains 333089 sequences. (Running on oeis4.)