A044492 Numbers n such that string 1,3 occurs in the base 6 representation of n but not of n+1.

9, 45, 59, 81, 117, 153, 189, 225, 261, 275, 297, 359, 369, 405, 441, 477, 491, 513, 549, 585, 621, 657, 693, 707, 729, 765, 801, 837, 873, 909, 923, 945, 981, 1017, 1053, 1089, 1125, 1139, 1161, 1197, 1233, 1269, 1305, 1341, 1355