A044459 Numbers n such that string 0,1 occurs in the base 5 representation of n but not of n+1.

26, 51, 76, 101, 126, 134, 151, 176, 201, 226, 251, 259, 276, 301, 326, 351, 376, 384, 401, 426, 451, 476, 501, 509, 526, 551, 576, 601, 626, 634, 674, 676, 701, 726, 751, 759, 776, 801, 826, 851, 876, 884, 901, 926, 951, 976