A044206 Numbers n such that string 2,3 occurs in the base 8 representation of n but not of n-1.

19, 83, 147, 152, 211, 275, 339, 403, 467, 531, 595, 659, 664, 723, 787, 851, 915, 979, 1043, 1107, 1171, 1176, 1216, 1299, 1363, 1427, 1491, 1555, 1619, 1683, 1688, 1747, 1811, 1875, 1939, 2003, 2067, 2131, 2195, 2200, 2259