References to A107353

a(0)=0, a(n) = smallest integer not previously used which contains a digit from a(n-1).
0, 10, 1, 11, 12, 2, 20, 21, 13, 3, 23, 22, 24, 4, 14, 15, 5, 25, 26, 6, 16, 17, 7, 27, 28, 8

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