A043983 Numbers n such that 3 and 6 occur juxtaposed in the base 9 representation of n but not of n+1.

33, 57, 114, 138, 195, 219, 276, 305, 357, 381, 438, 462, 521, 543, 600, 624, 681, 705, 762, 786, 843, 867, 924, 948, 1005, 1034, 1086, 1110, 1167, 1191, 1250, 1272, 1329, 1353, 1410, 1434, 1491, 1515, 1572, 1596, 1653, 1677