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A018994

Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite BPH = Beryllophosphate-H Na7K7[Be14P14O56].20H2O starting with a T3 atom.

3, 6, 24, 189, 1050, 5130, 29586, 183822, 1132146, 7238454, 48779613, 335824479, 2318832312, 15998100231, 110190414096

(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: A081072 A000717 A076020 * A018964 A304186 A288760

Adjacent sequences: A018991 A018992 A018993 * A018995 A018996 A018997

KEYWORD

nonn,more

AUTHOR

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

EXTENSIONS

a(11)-a(16) from Sean A. Irvine, Mar 17 2019

STATUS

approved

URL: https://oeis.org/A018994

⇱ A018994 - OEIS