login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A019009
Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite DFO = DAF-1 [ Mg14Al52P66O264 ] . 7 R . 40 H2O.
0
3, 15, 35, 220, 1061, 5229, 27996, 169400, 1119573, 7630797, 52087939, 353765130, 2394603278, 16234023660, 110662223373
OFFSET
2,1
REFERENCES
G. Thimm and W. E. Klee, Zeolite cycle sequences, Zeolites, 19, pp. 422-424, 1997.
CROSSREFS
Sequence in context: A015715 A187787 A290717 * A290716 A347998 A162441
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