A044290 Numbers n such that string 4,3 occurs in the base 9 representation of n but not of n-1.

39, 120, 201, 282, 351, 363, 444, 525, 606, 687, 768, 849, 930, 1011, 1080, 1092, 1173, 1254, 1335, 1416, 1497, 1578, 1659, 1740, 1809, 1821, 1902, 1983, 2064, 2145, 2226, 2307, 2388, 2469, 2538, 2550, 2631, 2712, 2793