A043159 Numbers n such that 1 and 2 occur juxtaposed in the base 8 representation of n but not of n-1.

10, 17, 74, 80, 136, 145, 202, 209, 266, 273, 330, 337, 394, 401, 458, 465, 522, 529, 586, 592, 640, 714, 721, 778, 785, 842, 849, 906, 913, 970, 977, 1034, 1041, 1088, 1160, 1169, 1226, 1233, 1290, 1297, 1354, 1361, 1418