

A018960


Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite AFR = SAPO40 [ Si7Al29P28O128 ] . 4 TPA . OH.


0



2, 9, 43, 185, 1068, 5908, 33711, 201908, 1252537, 8093382, 54041010, 367349280, 2519993244, 17358556116, 119812418022
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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: A132847 A275620 A121365 * A217666 A002310 A309986
Adjacent sequences: A018957 A018958 A018959 * A018961 A018962 A018963


KEYWORD

nonn,more


AUTHOR

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


EXTENSIONS

a(11)a(16) from Sean A. Irvine, Mar 06 2019


STATUS

approved



