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A019234 Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite RUT = RUB-10 R4 [ B4Si32O72 ]. 0
0, 2, 2, 3, 9, 15, 34, 94, 209, 504, 1306, 3073, 7654, 20149, 50226, 130772, 338518, 867558, 2257485, 5870934, 15278349, 40053657, 105184694, 276937693, 732156972, 1938948436, 5148099462, 13701809925, 36532372370 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,2

LINKS

Table of n, a(n) for n=3..31.

Database of Zeolite Structures, Structure Commission of the International Zeolite Association, revised 2017.

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.

CROSSREFS

Sequence in context: A322891 A275329 A021821 * A032172 A032103 A091044

Adjacent sequences:  A019231 A019232 A019233 * A019235 A019236 A019237

KEYWORD

nonn,more

AUTHOR

Georg Thimm (mgeorg(AT)ntu.edu.sg)

EXTENSIONS

a(21)-a(31) from Sean A. Irvine, Apr 18 2019

STATUS

approved

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Last modified August 9 00:15 EDT 2022. Contains 356016 sequences. (Running on oeis4.)