A044210 Numbers n such that string 2,7 occurs in the base 8 representation of n but not of n-1.

23, 87, 151, 184, 215, 279, 343, 407, 471, 535, 599, 663, 696, 727, 791, 855, 919, 983, 1047, 1111, 1175, 1208, 1239, 1303, 1367, 1431, 1472, 1559, 1623, 1687, 1720, 1751, 1815, 1879, 1943, 2007, 2071, 2135, 2199, 2232, 2263