OFFSET
1,3
COMMENTS
This is an example of an infinite ternary sequence in which no three blocks occur consecutively which are permutations of each other.
LINKS
F. M. Dekking, Strongly nonrepetitive sequences and progression-free sets, J. Combin. Theory Ser. A 27 (1979), no. 2, 181--185. MR0542527 (81b:05027).
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, May 29 2012
STATUS
approved