A019017 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A019017

Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite GIS = Cycle class sequences of Gismondine Ca4 [ Al8Si8O32 ] . 16 H2O.

3, 6, 20, 120, 942, 6090, 35264, 211482, 1379880, 9243828, 61999620, 418306954, 2855363476, 19702480170, 137045990064

(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: A194992 A163881 A238474 * A019049 A019057 A019058

Adjacent sequences: A019014 A019015 A019016 * A019018 A019019 A019020

KEYWORD

nonn,more

AUTHOR

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

EXTENSIONS

a(11)-a(16) from Sean A. Irvine, Mar 21 2019

STATUS

approved