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A018960
Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite AFR = SAPO-40 [ Si7Al29P28O128 ] . 4 TPA . OH.
0
2, 9, 43, 185, 1068, 5908, 33711, 201908, 1252537, 8093382, 54041010, 367349280, 2519993244, 17358556116, 119812418022
OFFSET
2,1
REFERENCES
G. Thimm and W. E. Klee, Zeolite cycle sequences, Zeolites, 19, pp. 422-424, 1997.
CROSSREFS
Sequence in context: A132847 A275620 A121365 * A371125 A217666 A002310
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