A024651 n written in fractional base 9/3.

0, 1, 2, 3, 4, 5, 6, 7, 8, 30, 31, 32, 33, 34, 35, 36, 37, 38, 60, 61, 62, 63, 64, 65, 66, 67, 68, 300, 301, 302, 303, 304, 305, 306, 307, 308, 330, 331, 332, 333, 334, 335, 336, 337, 338, 360, 361, 362, 363, 364, 365, 366, 367, 368, 600, 601, 602, 603, 604, 605, 606, 607, 608