A019108 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, 39, 27, 87, 402, 546, 1332, 4503, 9141, 22260, 62355, 147339, 366447, 965064, 2437173, 6269181, 16472895, 42971868, 112948683, 299077797, 792147474, 2106620565, 5620012437, 15013246413, 40201647126

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: A217708 A306243 A173685 * A019115 A229637 A019109

Adjacent sequences: A019105 A019106 A019107 * A019109 A019110 A019111

Keyword

nonn,more

Author

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

Extensions

a(21)-a(31) from Sean A. Irvine, Apr 05 2019

Status

approved