A044119 Numbers n such that string 2,5 occurs in the base 6 representation of n but not of n-1.

17, 53, 89, 102, 125, 161, 197, 233, 269, 305, 318, 341, 377, 413, 449, 485, 521, 534, 557, 593, 612, 665, 701, 737, 750, 773, 809, 845, 881, 917, 953, 966, 989, 1025, 1061, 1097, 1133, 1169, 1182, 1205, 1241, 1277, 1313, 1349