A043227 Numbers k such that 1 and 4 occur juxtaposed in the base-10 representation of k but not of k-1.

14, 41, 114, 140, 214, 241, 314, 341, 410, 441, 514, 541, 614, 641, 714, 741, 814, 841, 914, 941, 1014, 1041, 1114, 1140, 1214, 1241, 1314, 1341, 1400, 1514, 1541, 1614, 1641, 1714, 1741, 1814, 1841, 1914, 1941, 2014, 2041