A019140 - OEIS

A019140

Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite LOV = Lovdarite K4Na12 [ Be8Si28O72 ] . 18 H2O.

1, 1, 0, 2, 0, 10, 20, 100, 210, 530, 974, 2548, 5654, 15378, 37662, 100702, 248970, 648082, 1625344, 4221578, 10746294, 27964310, 72059274, 188226426, 488925522, 1280741934, 3346300256, 8791335140, 23076212174, 60806053482

(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..32.

G. Thimm, Cycle sequences of crystal structures

CROSSREFS

Sequence in context: A228539 A061189 A019220 * A361816 A303490 A303387

Adjacent sequences: A019137 A019138 A019139 * A019141 A019142 A019143

KEYWORD

nonn,more

AUTHOR

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

EXTENSIONS

a(21)-a(32) from Sean A. Irvine, Apr 08 2019

STATUS

approved