A044621 Numbers n such that string 6,5 occurs in the base 8 representation of n but not of n+1.

53, 117, 181, 245, 309, 373, 431, 437, 501, 565, 629, 693, 757, 821, 885, 943, 949, 1013, 1077, 1141, 1205, 1269, 1333, 1397, 1455, 1461, 1525, 1589, 1653, 1717, 1781, 1845, 1909, 1967, 1973, 2037, 2101, 2165, 2229, 2293, 2357