A018954 - OEIS

A018954

Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite AFG = Afghanite (Na2,Ca,K2)12 [ Al24Si24O96 ].

2, 7, 36, 234, 1096, 6501, 38976, 250928, 1658180, 11168713, 76437810, 529586841, 3699117224, 26041623700, 184656522648

(list; graph; refs; listen; history; text; internal format)

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

Sequence in context: A370471 A177258 A018997 * A019030 A212411 A119736

Adjacent sequences: A018951 A018952 A018953 * A018955 A018956 A018957

KEYWORD

nonn,more

AUTHOR

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

EXTENSIONS

a(11)-a(18) from Sean A. Irvine, Mar 05 2019

STATUS

approved