A044281 Numbers n such that string 3,3 occurs in the base 9 representation of n but not of n-1.

30, 111, 192, 270, 354, 435, 516, 597, 678, 759, 840, 921, 999, 1083, 1164, 1245, 1326, 1407, 1488, 1569, 1650, 1728, 1812, 1893, 1974, 2055, 2136, 2217, 2298, 2379, 2430, 2541, 2622, 2703, 2784, 2865, 2946, 3027, 3108