Two iterations of Reverse and Add are needed to reach a palindrome.

Terms

a(0) =5a(1) =6a(2) =7a(3) =8a(4) =9a(5) =19a(6) =28a(7) =37a(8) =39a(9) =46a(10) =48a(11) =49a(12) =55a(13) =57a(14) =58a(15) =64a(16) =66a(17) =67a(18) =73a(19) =75a(20) =76a(21) =82a(22) =84a(23) =85a(24) =91a(25) =93a(26) =94a(27) =109a(28) =119a(29) =129