A044211 Numbers n such that string 3,0 occurs in the base 8 representation of n but not of n-1.

24, 88, 152, 192, 216, 280, 344, 408, 472, 536, 600, 664, 704, 728, 792, 856, 920, 984, 1048, 1112, 1176, 1216, 1240, 1304, 1368, 1432, 1496, 1536, 1624, 1688, 1728, 1752, 1816, 1880, 1944, 2008, 2072, 2136, 2200, 2240, 2264