A044172 Numbers n such that string 4,6 occurs in the base 7 representation of n but not of n-1.

34, 83, 132, 181, 230, 238, 279, 328, 377, 426, 475, 524, 573, 581, 622, 671, 720, 769, 818, 867, 916, 924, 965, 1014, 1063, 1112, 1161, 1210, 1259, 1267, 1308, 1357, 1406, 1455, 1504, 1553, 1602, 1610, 1651, 1666, 1749, 1798