A044731 Numbers n such that string 1,8 occurs in the base 10 representation of n but not of n+1.

18, 118, 189, 218, 318, 418, 518, 618, 718, 818, 918, 1018, 1118, 1189, 1218, 1318, 1418, 1518, 1618, 1718, 1899, 1918, 2018, 2118, 2189, 2218, 2318, 2418, 2518, 2618, 2718, 2818, 2918, 3018, 3118, 3189, 3218, 3318, 3418