A032930 n-th number whose set of base 9 digits is {1,2}.

1, 2, 10, 11, 19, 20, 91, 92, 100, 101, 172, 173, 181, 182, 820, 821, 829, 830, 901, 902, 910, 911, 1549, 1550, 1558, 1559, 1630, 1631, 1639, 1640, 7381, 7382, 7390, 7391, 7462, 7463, 7471, 7472, 8110, 8111, 8119, 8120, 8191