A043161 Numbers n such that 1 and 4 occur juxtaposed in the base 8 representation of n but not of n-1.

12, 33, 76, 96, 140, 161, 204, 225, 264, 289, 332, 353, 396, 417, 460, 481, 524, 545, 588, 608, 652, 673, 716, 737, 768, 844, 865, 908, 929, 972, 993, 1036, 1057, 1100, 1120, 1164, 1185, 1228, 1249, 1288, 1313, 1356, 1377