A019241 - OEIS

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A019241

Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite STI = Stilbite Na4Ca8[ Al20Si52O144 ] . 56 H2O.

0

0, 2, 2, 10, 9, 16, 58, 98, 196, 445, 1107, 2566, 6245, 15883, 40199, 101196, 262535, 671260, 1729534, 4466241, 11504745, 29835299, 77256496, 200759467, 523172455, 1365186585, 3572926982, 9369651786, 24618108658

(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: A129898 A135996 A141610 * A168295 A309751 A249152

Adjacent sequences: A019238 A019239 A019240 * A019242 A019243 A019244

KEYWORD

nonn,more

AUTHOR

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

EXTENSIONS

a(20)-a(31) from Sean A. Irvine, Apr 18 2019

STATUS

approved