Avoiding squares and overlaps over the natural numbers

@article{GuayPaquet2009AvoidingSA,
  title={Avoiding squares and overlaps over the natural numbers},
  author={Mathieu Guay-Paquet and Jeffrey Shallit},
  journal={Discret. Math.},
  year={2009},
  volume={309},
  pages={6245-6254}
}

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