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A018997
Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite CAN = Cancrinite Na6[ Al6Si6O24 ] . CaCO3 . 2 H2O.
0
2, 7, 36, 230, 1104, 6657, 38976, 247431, 1617560, 10806202, 73706144, 510591393, 3568689922, 25130781435, 178056349424
OFFSET
2,1
REFERENCES
G. Thimm and W. E. Klee, Zeolite cycle sequences, Zeolites, 19, pp. 422-424, 1997.
CROSSREFS
Sequence in context: A371545 A370471 A177258 * A018954 A019030 A212411
KEYWORD
nonn,more
AUTHOR
Georg Thimm (mgeorg(AT)ntu.edu.sg)
EXTENSIONS
a(11)-a(16) from Sean A. Irvine, Mar 19 2019
STATUS
approved