A044083 Numbers n such that string 1,1 occurs in the base 5 representation of n but not of n-1.

6, 30, 56, 81, 106, 131, 150, 181, 206, 231, 256, 280, 306, 331, 356, 381, 405, 431, 456, 481, 506, 530, 556, 581, 606, 631, 655, 681, 706, 731, 750, 881, 905, 931, 956, 981, 1006, 1030, 1056, 1081, 1106, 1131, 1155, 1181, 1206