A044595 Numbers n such that string 3,3 occurs in the base 8 representation of n but not of n+1.

27, 91, 155, 223, 283, 347, 411, 475, 539, 603, 667, 735, 795, 859, 923, 987, 1051, 1115, 1179, 1247, 1307, 1371, 1435, 1499, 1563, 1627, 1691, 1791, 1819, 1883, 1947, 2011, 2075, 2139, 2203, 2271, 2331, 2395, 2459, 2523