A043244 Numbers n such that 3 and 8 occur juxtaposed in the base 10 representation of n but not of n-1.

38, 83, 138, 183, 238, 283, 338, 380, 438, 483, 538, 583, 638, 683, 738, 783, 830, 883, 938, 983, 1038, 1083, 1138, 1183, 1238, 1283, 1338, 1380, 1438, 1483, 1538, 1583, 1638, 1683, 1738, 1783, 1830, 1883, 1938, 1983, 2038