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A018993 Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite AWW = AlPO4-22 [ Al24P24O96 ] . 2 R. 0
3, 7, 42, 219, 1011, 5598, 34646, 224809, 1501860, 10113371, 68641436, 470506018, 3252534733, 22668508169, 159249668294 (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: A086397 A229941 A019018 * A217759 A160615 A106965

Adjacent sequences:  A018990 A018991 A018992 * A018994 A018995 A018996

KEYWORD

nonn,more

AUTHOR

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

EXTENSIONS

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

STATUS

approved

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Last modified November 26 03:20 EST 2020. Contains 338632 sequences. (Running on oeis4.)