Many excellent designs for a new banner were submitted. We will use the best of them in rotation.
2,2
G. Thimm and W. E. Klee, Zeolite cycle sequences, Zeolites, 19, pp. 422-424, 1997.
Table of n, a(n) for n=2..10.
G. Thimm, Cycle sequences of crystal structures
Sequence in context: A217318 A038693 A239237 * A160479 A085222 A085221
Adjacent sequences: A018987 A018988 A018989 * A018991 A018992 A018993
nonn
Georg Thimm (mgeorg(AT)ntu.edu.sg)
approved