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A019263 Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite WEI = Weinebeneite Ca4[ Be12P8O32(OH)8 ] . 16 H2O. 0
2, 0, 0, 2, 8, 16, 28, 48, 108, 280, 768, 2086, 5212, 12532, 30096, 72366, 176580, 440612, 1110820, 2807834, 7130100, 18179108, 46394348, 118468710, 302982828, 776358572, 1993785892, 5133560494, 13249748168, 34266401908 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,1

REFERENCES

G. Thimm and W. E. Klee, Zeolite cycle sequences, Zeolites, 19, pp. 422-424, 1997.

LINKS

Table of n, a(n) for n=3..32.

G. Thimm, Cycle sequences of crystal structures

CROSSREFS

Sequence in context: A116597 A202496 A165664 * A244132 A169776 A240766

Adjacent sequences:  A019260 A019261 A019262 * A019264 A019265 A019266

KEYWORD

nonn,more

AUTHOR

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

EXTENSIONS

a(21)-a(32) from Sean A. Irvine, Apr 20 2019

STATUS

approved

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Last modified November 20 14:54 EST 2019. Contains 329337 sequences. (Running on oeis4.)