A018949 Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite AET = AlPO4-8 [ Al36P36O144 ].

1, 14, 33, 308, 1356, 9515, 54475, 357706, 2245183, 14782772, 97279016, 655110237, 4458418304, 30828999850, 215762610377

Offset

2,2

References

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

Links

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

G. Thimm, Cycle sequences of crystal structures

Crossrefs

Sequence in context: A090090 A116150 A019272 * A007365 A065933 A276715

Adjacent sequences: A018946 A018947 A018948 * A018950 A018951 A018952

Keyword

nonn,more

Author

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

Extensions

a(11)-a(16) from Sean A. Irvine, Mar 03 2019

Status

approved