A019237 Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite SGT = Sigma-2 [ Si64O128 ] . 4 R.

0, 1, 4, 1, 12, 32, 52, 100, 242, 622, 1318, 3188, 8382, 19662, 49006, 130188, 331642, 850856, 2239524, 5850712, 15287652, 40300278, 106291956, 280451616, 742278248, 1968624658, 5228549484, 13912280278, 37089229168

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: A306299 A089503 A019236 * A019238 A299523 A157404

Adjacent sequences: A019234 A019235 A019236 * A019238 A019239 A019240

Keyword

nonn,more

Author

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

Extensions

a(20)-a(31) from Sean A. Irvine, Apr 18 2019

Status

approved