Tribonacci Numbers (and the Rauzy Fractal) – Numberphile

Edmund Harriss introduces a very cool tiling and talks about Tribonacci Numbers.
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Papers relating to this video…
Nombres algébriques et substitutions:
Algebraic numbers, free group automorphisms and substitutions on the plane:

CORRECTION: At 5:09 the number in the animation should be 17.

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