A044238 Numbers n such that string 6,3 occurs in the base 8 representation of n but not of n-1.

51, 115, 179, 243, 307, 371, 408, 435, 499, 563, 627, 691, 755, 819, 883, 920, 947, 1011, 1075, 1139, 1203, 1267, 1331, 1395, 1432, 1459, 1523, 1587, 1651, 1715, 1779, 1843, 1907, 1944, 1971, 2035, 2099, 2163, 2227, 2291, 2355