A044208 Numbers n such that string 2,5 occurs in the base 8 representation of n but not of n-1.

21, 85, 149, 168, 213, 277, 341, 405, 469, 533, 597, 661, 680, 725, 789, 853, 917, 981, 1045, 1109, 1173, 1192, 1237, 1301, 1344, 1429, 1493, 1557, 1621, 1685, 1704, 1749, 1813, 1877, 1941, 2005, 2069, 2133, 2197, 2216, 2261