A045205 Numbers whose base-5 representation contains no 0's and exactly three 4's.

124, 249, 374, 499, 549, 574, 599, 609, 614, 619, 621, 622, 623, 874, 999, 1124, 1174, 1199, 1224, 1234, 1239, 1244, 1246, 1247, 1248, 1499, 1624, 1749, 1799, 1824, 1849, 1859, 1864, 1869, 1871, 1872, 1873, 2124, 2249