A004289 Least positive multiple of n written in base 9 using only 0 and 1.

1, 11, 10, 1111, 11, 110, 111, 11111111, 10, 11, 11111, 11110, 111, 111111, 110, 101111111, 10001, 110, 11101, 1111, 1110, 110101, 11001, 111111110, 11011, 111111, 100, 1001101, 100101, 110, 111001, 111011111, 111110, 10001, 111111