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A018982
Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite AST = AlPO4-16 [ Al20P20O80 ] .4 R . 16 H2O.
0
3, 15, 24, 162, 792, 5448, 33090, 213894, 1362564, 8905782, 59041560, 398430732, 2716098852, 18681957864, 129449774976
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: A274697 A129024 A348770 * A276938 A046280 A046283
KEYWORD
nonn,more
AUTHOR
Georg Thimm (mgeorg(AT)ntu.edu.sg)
EXTENSIONS
a(11)-a(16) from Sean A. Irvine, Mar 13 2019
STATUS
approved