A019112 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, 2, 2, 1, 12, 21, 48, 137, 250, 605, 1554, 3342, 8332, 21594, 51502, 131328, 341762, 864538, 2246856, 5900130, 15369316, 40494237, 107292346, 283725243, 753791484, 2008956063, 5355256010, 14308720447, 38309123306

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: A132471 A130528 A132986 * A048660 A019227 A163893

Adjacent sequences: A019109 A019110 A019111 * A019113 A019114 A019115

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