A044523 Numbers n such that string 0,4 occurs in the base 7 representation of n but not of n+1.

53, 102, 151, 200, 249, 298, 347, 377, 396, 445, 494, 543, 592, 641, 690, 720, 739, 788, 837, 886, 935, 984, 1033, 1063, 1082, 1131, 1180, 1229, 1278, 1327, 1376, 1406, 1425, 1474, 1523, 1572, 1621, 1670, 1719, 1749, 1768, 1817