A043942 Numbers n such that 1 and 5 occur juxtaposed in the base 8 representation of n but not of n+1.

13, 41, 77, 111, 141, 169, 205, 233, 269, 297, 335, 361, 397, 425, 461, 489, 525, 553, 589, 623, 653, 681, 717, 745, 781, 809, 895, 909, 937, 973, 1001, 1037, 1065, 1101, 1135, 1165, 1193, 1229, 1257, 1293, 1321, 1359, 1385