References to A005679

A squarefree (or Thue-Morse) ternary sequence: closed under a->abc, b->ac, c->b.
2, 1, 3, 2, 3, 1, 2, 1, 3, 1, 2, 3, 2, 1, 3, 2, 3, 1, 2, 3, 2, 1, 3, 1, 2, 1, 3, 2, 3, 1, 2, 1, 3, 1

1 seqfan posts