A044799 Numbers n such that string 8,6 occurs in the base 10 representation of n but not of n+1.

86, 186, 286, 386, 486, 586, 686, 786, 869, 886, 986, 1086, 1186, 1286, 1386, 1486, 1586, 1686, 1786, 1869, 1886, 1986, 2086, 2186, 2286, 2386, 2486, 2586, 2686, 2786, 2869, 2886, 2986, 3086, 3186, 3286, 3386, 3486, 3586