A019109 - OEIS

A019109

Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite DDR = Deca-dodecasil 3R [ Si120O240 ]q R.

0, 0, 6, 0, 3, 51, 42, 117, 453, 615, 1509, 4665, 9159, 22542, 61659, 143013, 359028, 942234, 2362140, 6096888, 16004478, 41649720, 109662291, 290536845, 769577400, 2049110310, 5470439130, 14619639972, 39172342518

(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..31.

G. Thimm, Cycle sequences of crystal structures

CROSSREFS

Sequence in context: A019108 A019115 A229637 * A089841 A202542 A019766

Adjacent sequences: A019106 A019107 A019108 * A019110 A019111 A019112

KEYWORD

nonn,more

AUTHOR

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

EXTENSIONS

a(20)-a(31) from Sean A. Irvine, Apr 05 2019

STATUS

approved