A043031 n-th base 9 palindrome that starts with 4.

4, 40, 328, 337, 346, 355, 364, 373, 382, 391, 400, 2920, 3010, 3100, 3190, 3280, 3370, 3460, 3550, 3640, 26248, 26329, 26410, 26491, 26572, 26653, 26734, 26815, 26896, 26986, 27067, 27148, 27229, 27310, 27391, 27472