Add 4, then reverse the decimal digits; start with 10.

Terms

a(0) =10a(1) =41a(2) =54a(3) =85a(4) =98a(5) =201a(6) =502a(7) =605a(8) =906a(9) =19a(10) =32a(11) =63a(12) =76a(13) =8a(14) =21a(15) =52a(16) =65a(17) =96a(18) =1a(19) =5a(20) =9a(21) =31a(22) =53a(23) =75a(24) =97a(25) =101a(26) =501a(27) =505a(28) =905a(29) =909