A019220 - OEIS

A019220

Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite RSN = RUB-17 K4Na12 [ Zn8Si28O72 ] . 18 H2O.

1, 1, 0, 2, 0, 10, 20, 100, 206, 528, 1008, 2594, 5618, 15246, 37564, 100604, 249758, 651804, 1633514, 4233788, 10771236, 28036370, 72289144, 188906208, 490896946, 1286263486, 3361239986, 8831282324, 23185222496

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

OFFSET

3,4

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: A070681 A228539 A061189 * A019140 A361816 A303490

Adjacent sequences: A019217 A019218 A019219 * A019221 A019222 A019223

KEYWORD

nonn,more

AUTHOR

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

EXTENSIONS

a(20)-a(31) from Sean A. Irvine, Apr 17 2019

STATUS

approved