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A019117 Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite EPI = Epistilbite Ca3 [ Al6Si18O48 ] . 16 H2O. 0
0, 0, 5, 4, 4, 24, 44, 86, 230, 499, 1216, 3329, 8059, 20320, 54177, 138028, 352138, 917367, 2382713, 6193160, 16203044, 42592581, 112203219, 296304327, 785315392, 2085553429, 5547221211, 14791385421 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,3

REFERENCES

G. Thimm and W. E. Klee, Zeolite cycle sequences, Zeolites, 19, pp. 422-424, 1997.

LINKS

Table of n, a(n) for n=3..30.

G. Thimm, Cycle sequences of crystal structures

CROSSREFS

Sequence in context: A255332 A071419 A291069 * A204372 A279918 A273986

Adjacent sequences:  A019114 A019115 A019116 * A019118 A019119 A019120

KEYWORD

nonn,more

AUTHOR

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

EXTENSIONS

a(21)-a(30) from Sean A. Irvine, Apr 05 2019

STATUS

approved

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Last modified September 20 10:10 EDT 2019. Contains 327229 sequences. (Running on oeis4.)