A019111 - OEIS

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A019111

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 ]q R.

0, 1, 4, 0, 7, 27, 33, 104, 302, 557, 1436, 3780, 8483, 21634, 55744, 137371, 354163, 916762, 2354000, 6149728, 16101636, 42225647, 111610989, 295365408, 783336821, 2085927781, 5561256688, 14852499506, 39762167485

(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: A248931 A200501 A141433 * A182158 A103554 A261278

Adjacent sequences: A019108 A019109 A019110 * A019112 A019113 A019114

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

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