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A019135
Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite HEU = Heulandite Ca4 [ Al8Si28O72 ] . 24 H2O.
0
0, 1, 2, 5, 9, 18, 19, 83, 169, 450, 1125, 2944, 7247, 19186, 47324, 122937, 310406, 802867, 2060084, 5354123, 13838596, 36175025, 94205440, 247125778, 648035596, 1706340655, 4495756752, 11884095578, 31435147724
OFFSET
3,3
REFERENCES
G. Thimm and W. E. Klee, Zeolite cycle sequences, Zeolites, 19, pp. 422-424, 1997.
CROSSREFS
Sequence in context: A163734 A336141 A184353 * A069957 A091356 A107705
KEYWORD
nonn,more
AUTHOR
Georg Thimm (mgeorg(AT)ntu.edu.sg)
EXTENSIONS
a(21)-a(31) from Sean A. Irvine, Apr 08 2019
STATUS
approved