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A019258 Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite VNI = VPI-9 Rb44K4[ Zn24Si96O240 ] . 48 H2O. 0
1, 1, 1, 1, 2, 12, 30, 88, 204, 392, 893, 2185, 5461, 14441, 37158, 93312, 236157, 601599, 1538005, 3963519, 10245493, 26465121, 68448150, 177543974, 461856724, 1204741952, 3150133226, 8253342526, 21660871257 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,5

LINKS

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

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: A301774 A286230 A083175 * A124903 A197954 A276451

Adjacent sequences:  A019255 A019256 A019257 * A019259 A019260 A019261

KEYWORD

nonn,more

AUTHOR

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

EXTENSIONS

a(21)-a(31) from Sean A. Irvine, Apr 20 2019

STATUS

approved

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Last modified December 6 04:52 EST 2021. Contains 349562 sequences. (Running on oeis4.)