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A019260 Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite VSV = VPI-7 Na26H6[ Zn16Si56O144 ] . 44 H2O. 0
1, 1, 1, 0, 0, 8, 24, 90, 236, 490, 1098, 2492, 5786, 14710, 38256, 98480, 253500, 648418, 1650162, 4216096, 10833166, 27976928, 72602082, 188988750, 492974940, 1288662598, 3374841840, 8854072964, 23276346316 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,6

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: A128688 A279162 A217016 * A019221 A334756 A281463

Adjacent sequences:  A019257 A019258 A019259 * A019261 A019262 A019263

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 3 05:05 EST 2021. Contains 349445 sequences. (Running on oeis4.)