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A019084
Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite BRE = Brewsterite (Sr,Ba)2 [ Al4Si12O32 ] . 10 H2O.
0
0, 1, 2, 5, 7, 17, 21, 85, 153, 536, 1069, 3197, 7115, 20308, 46964, 129045, 310597, 836871, 2073423, 5548919, 14044186, 37430249, 96200983, 255998110, 664958665, 1769131947, 4633463984, 12335480609, 32519540141
OFFSET
3,3
REFERENCES
G. Thimm and W. E. Klee, Zeolite cycle sequences, Zeolites, 19 (1997), pp. 422-424.
CROSSREFS
Sequence in context: A238699 A068360 A110254 * A278487 A176676 A307452
KEYWORD
nonn,more
AUTHOR
Georg Thimm (mgeorg(AT)ntu.edu.sg)
EXTENSIONS
a(20)-a(30) from Sean A. Irvine, Apr 03 2019
STATUS
approved