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

Terms

a(0) =69a(1) =78a(2) =87a(3) =96a(4) =174a(5) =175a(6) =181a(7) =183a(8) =191a(9) =192a(10) =195a(11) =273a(12) =274a(13) =280a(14) =282a(15) =290a(16) =291a(17) =294a(18) =372a(19) =373a(20) =381a(21) =390a(22) =393a(23) =471a(24) =472a(25) =480a(26) =492a(27) =539a(28) =570a(29) =571