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A018973 Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite AFY = CoAPO-50 R3 [ Co3Al5P8O32 ] .7 H2O. 0
4, 17, 40, 120, 584, 3223, 19196, 119786, 785597, 5268206, 35137379, 231694948, 1518635416, 9902694514, 64445484845 (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: A273309 A145995 A275815 * A212575 A162148 A166781

Adjacent sequences:  A018970 A018971 A018972 * A018974 A018975 A018976

KEYWORD

nonn,more

AUTHOR

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

EXTENSIONS

a(11)-a(16) from Sean A. Irvine, Mar 09 2019

STATUS

approved

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Last modified July 9 01:53 EDT 2020. Contains 335537 sequences. (Running on oeis4.)