A019061 Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite THO = Thomsonite Na4Ca8[ Al20Si20O80 ] . 24 H2O.

4, 2, 14, 160, 900, 4886, 30682, 192510, 1224950, 7984182, 52634438, 351382520, 2369835680, 16119973510, 110532124292

Offset

2,1

References

G. Thimm and W. E. Klee, Zeolite cycle sequences, Zeolites, 19, pp. 422-424, 1997.

Links

Table of n, a(n) for n=2..16.

G. Thimm, Cycle sequences of crystal structures

Crossrefs

Cf. A019012. [From R. J. Mathar, Oct 26 2008]

Sequence in context: A224893 A087957 A360084 * A019012 A154333 A185130

Adjacent sequences: A019058 A019059 A019060 * A019062 A019063 A019064

Keyword

nonn,more

Author

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

Extensions

a(11)-a(16) from Sean A. Irvine, Mar 31 2019

Status

approved