A019242 - OEIS

A019242

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, 3, 2, 10, 10, 19, 50, 86, 184, 436, 980, 2500, 5890, 15348, 37898, 96636, 249382, 637710, 1643574, 4245268, 10925428, 28374228, 73419954, 190918200, 497509618, 1298451532, 3398193498, 8910240128, 23406398134

(list; graph; refs; listen; history; text; internal format)

OFFSET

3,2

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..31.

G. Thimm, Cycle sequences of crystal structures

CROSSREFS

Sequence in context: A214966 A367300 A103245 * A064367 A113980 A095675

Adjacent sequences: A019239 A019240 A019241 * A019243 A019244 A019245

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