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A019024
Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite KFI = ZK-5 Na30 [ Al30Si66O192 ] . 98 H2O.
0
3, 7, 40, 185, 823, 4508, 30268, 201255, 1311400, 8625881, 57059059, 380393650, 2561920424, 17442035350, 119893594460
OFFSET
2,1
LINKS
Database of Zeolite Structures, Structure Commission of the International Zeolite Association, revised 2017.
Georg Thimm, A graph theoretical approach to the analysis, comparison, and enumeration of crystal structures, Dissertation, Goethe University Frankfurt, Germany, 2008.
Georg Thimm and W. E. Klee, Zeolite cycle sequences, Zeolites, 19(5-6) (1997), 422-424.
CROSSREFS
Sequence in context: A018967 A018942 A018943 * A135071 A096219 A128647
KEYWORD
nonn,more
AUTHOR
Georg Thimm (mgeorg(AT)ntu.edu.sg)
EXTENSIONS
a(11)-a(16) from Sean A. Irvine, Mar 23 2019
STATUS
approved