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A019144
Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite MEI = ZSM-18 Nan [ AlnSi34-nO68 ] . 28 H2O (n=2.1-5.7).
0
0, 2, 2, 7, 13, 25, 42, 81, 193, 454, 1041, 2502, 6242, 13807, 35326, 87295, 209812, 548575, 1343566, 3489028, 8907422, 22985251, 59673055, 154469560, 402551592, 1046972388, 2729730656, 7118291151, 18566002813
OFFSET
3,2
REFERENCES
G. Thimm and W. E. Klee, Zeolite cycle sequences, Zeolites, 19, pp. 422-424, 1997.
CROSSREFS
Sequence in context: A303588 A366583 A366584 * A362318 A049953 A364313
KEYWORD
nonn,more
AUTHOR
Georg Thimm (mgeorg(AT)ntu.edu.sg)
EXTENSIONS
a(21)-a(31) from Sean A. Irvine, Apr 09 2019
STATUS
approved