A043482 Numbers n such that number of 7's in base 9 is 2.

70, 151, 232, 313, 394, 475, 556, 574, 583, 592, 601, 610, 619, 628, 630, 631, 632, 633, 634, 635, 636, 638, 646, 718, 799, 880, 961, 1042, 1123, 1204, 1285, 1303, 1312, 1321, 1330, 1339, 1348, 1357, 1359, 1360, 1361, 1362, 1363