A043464 Numbers n such that number of 2's in base 9 is 4.

1640, 8201, 13304, 14033, 14600, 14681, 14744, 14753, 14760, 14761, 14763, 14764, 14765, 14766, 14767, 14768, 14771, 14780, 14789, 14798, 14807, 14816, 14843, 14924, 15005, 15086, 15167, 15248, 15491, 16220, 16949