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A019203 Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite NES = NU-87 H4[ Al4Si64O136 ] . n H2O. 0
0, 0, 4, 6, 6, 32, 72, 120, 316, 804, 1690, 3896, 10058, 23656, 54956, 140334, 351156, 863336, 2215008, 5734726, 14747386, 38509606, 101530298, 267478776, 707696286, 1881659158, 5006865152, 13336830220, 35597715792 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,3

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..31.

G. Thimm, Cycle sequences of crystal structures

CROSSREFS

Sequence in context: A145692 A295512 A064214 * A082237 A042976 A090142

Adjacent sequences:  A019200 A019201 A019202 * A019204 A019205 A019206

KEYWORD

nonn,more

AUTHOR

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

EXTENSIONS

a(20)-a(31) from Sean A. Irvine, Apr 15 2019

STATUS

approved

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Last modified January 25 01:49 EST 2020. Contains 331229 sequences. (Running on oeis4.)