Strongly Non-Repetitive Sequences and Progression-Free Sets

@article{Dekking1979StronglyNS,
  title={Strongly Non-Repetitive Sequences and Progression-Free Sets},
  author={F. Michel Dekking},
  journal={J. Comb. Theory, Ser. A},
  year={1979},
  volume={27},
  pages={181-185}
}
By a simple method we show the existence of (1) a sequence on two symbols in which no four blocks occur consecutively that are permutations of each other, and (2) a sequence on three symbols in which no three blocks occur consecutively that are permutations of each other. The problem of the existence of a sequence on four symbols in which no two blocks… CONTINUE READING