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
Offset: 1
Crossrefs
Cf. A007091.
Comments