A044408 Numbers n such that string 7,6 occurs in the base 10 representation of n but not of n-1.

76, 176, 276, 376, 476, 576, 676, 760, 776, 876, 976, 1076, 1176, 1276, 1376, 1476, 1576, 1676, 1760, 1776, 1876, 1976, 2076, 2176, 2276, 2376, 2476, 2576, 2676, 2760, 2776, 2876, 2976, 3076, 3176, 3276, 3376, 3476, 3576