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A019112
Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite DDR = Deca-dodecasil 3R[Si120O240]qR starting with a T5 atom.
0
0, 2, 2, 1, 12, 21, 48, 137, 250, 605, 1554, 3342, 8332, 21594, 51502, 131328, 341762, 864538, 2246856, 5900130, 15369316, 40494237, 107292346, 283725243, 753791484, 2008956063, 5355256010, 14308720447, 38309123306
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OFFSET
3,2
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:
A132471
A130528
A132986
*
A048660
A019227
A163893
Adjacent sequences:
A019109
A019110
A019111
*
A019113
A019114
A019115
KEYWORD
nonn
,
more
AUTHOR
Georg Thimm (mgeorg(AT)ntu.edu.sg)
EXTENSIONS
a(20)-a(31) from
Sean A. Irvine
, Apr 05 2019
STATUS
approved