A044132 Numbers n such that string 5,0 occurs in the base 6 representation of n but not of n-1.

30, 66, 102, 138, 174, 180, 210, 246, 282, 318, 354, 390, 396, 426, 462, 498, 534, 570, 606, 612, 642, 678, 714, 750, 786, 822, 828, 858, 894, 930, 966, 1002, 1038, 1044, 1074, 1080, 1146, 1182, 1218, 1254, 1260, 1290, 1326