A289826 - OEIS

A289826

a(n) is the smallest integer not yet in the sequence that shares exactly 2 distinct digits with the previous term a(n-1) with a(1) = 10.

10, 100, 101, 102, 12, 21, 112, 120, 20, 200, 201, 103, 13, 31, 113, 123, 23, 32, 132, 121, 122, 124, 14, 41, 104, 40, 140, 105, 15, 51, 115, 125, 25, 52, 152, 126, 16, 61, 106, 60, 160, 107, 17, 71, 117, 127, 27, 72, 172, 128, 18, 81, 108, 80, 180, 109, 19, 91, 119, 129, 29, 92, 192, 139