A044489 Numbers n such that string 1,0 occurs in the base 6 representation of n but not of n+1.

6, 42, 78, 114, 150, 186, 258, 294, 330, 366, 402, 438, 474, 510, 546, 582, 618, 654, 690, 726, 762, 798, 834, 870, 906, 942, 978, 1014, 1050, 1086, 1122, 1158, 1194, 1230, 1266, 1554, 1590, 1626, 1662, 1698, 1734, 1770, 1806