A032931 n-th number whose set of base 11 digits is {1,2}.

1, 2, 12, 13, 23, 24, 133, 134, 144, 145, 254, 255, 265, 266, 1464, 1465, 1475, 1476, 1585, 1586, 1596, 1597, 2795, 2796, 2806, 2807, 2916, 2917, 2927, 2928, 16105, 16106, 16116, 16117, 16226, 16227, 16237, 16238, 17436, 17437