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A019057
Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite PHI = Phillipsite K2(Ca,Na2)2[ Al6Si10O32 ] . 12 H2O.
0
3, 6, 20, 128, 918, 5880, 35034, 214132, 1386698, 9208945, 61708281, 417010747, 2848446737, 19651953235, 136664775342
OFFSET
2,1
REFERENCES
G. Thimm and W. E. Klee, Zeolite cycle sequences, Zeolites, 19, pp. 422-424, 1997.
CROSSREFS
Sequence in context: A238474 A019017 A019049 * A019058 A019050 A019051
KEYWORD
nonn,more
AUTHOR
Georg Thimm (mgeorg(AT)ntu.edu.sg)
EXTENSIONS
a(11)-a(16) from Sean A. Irvine, Mar 29 2019
STATUS
approved