A044346 Numbers n such that string 1,4 occurs in the base 10 representation of n but not of n-1.

14, 114, 140, 214, 314, 414, 514, 614, 714, 814, 914, 1014, 1114, 1140, 1214, 1314, 1400, 1514, 1614, 1714, 1814, 1914, 2014, 2114, 2140, 2214, 2314, 2414, 2514, 2614, 2714, 2814, 2914, 3014, 3114, 3140, 3214, 3314, 3414