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A018948
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Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite AET = AlPO4-8 [ Al36P36O144 ].
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0
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1, 13, 24, 275, 1194, 8899, 51733, 347529, 2210618, 14721789, 97702254, 662622660, 4535444099, 31505110446, 221249438258
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OFFSET
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2,2
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LINKS
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Table of n, a(n) for n=2..16.
Georg Thimm, Cycle sequences of crystal structures.
Georg Thimm, Personal website (archived).
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.
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CROSSREFS
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Sequence in context: A053080 A014357 A018991 * A256475 A335374 A335466
Adjacent sequences: A018945 A018946 A018947 * A018949 A018950 A018951
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KEYWORD
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nonn,more
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AUTHOR
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Georg Thimm (mgeorg(AT)ntu.edu.sg)
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EXTENSIONS
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a(11)-a(16) from Sean A. Irvine, Mar 02 2019
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STATUS
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approved
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