A043986 Numbers n such that 4 and 5 occur juxtaposed in the base 9 representation of n but not of n+1.

41, 49, 122, 130, 203, 211, 284, 292, 365, 377, 449, 454, 527, 535, 608, 616, 689, 697, 770, 778, 851, 859, 932, 940, 1013, 1021, 1094, 1106, 1178, 1183, 1256, 1264, 1337, 1345, 1418, 1426, 1499, 1507, 1580, 1588, 1661, 1669