References to A139079

Smallest number not yet in the sequence that contains the last digit of the previous term, with a(1) = 1.
1, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 101, 11, 12, 2, 21, 13, 3, 23, 31, 14, 4, 24

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