

A018998


Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite CHA = Chabazite Ca6[ Al12Si24O72 ] . 40 H2O.


0



3, 7, 40, 180, 758, 4417, 29836, 200559, 1331295, 8723979, 57418006, 382550298, 2579719716, 17578920955, 120847481224
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OFFSET

2,1


REFERENCES

G. Thimm and W. E. Klee, Zeolite cycle sequences, Zeolites, 19, pp. 422424, 1997.


LINKS

Table of n, a(n) for n=2..16.
G. Thimm, Cycle sequences of crystal structures


CROSSREFS

Sequence in context: A105621 A181081 A166895 * A018941 A018967 A018942
Adjacent sequences: A018995 A018996 A018997 * A018999 A019000 A019001


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



