Trajectory of 89 under map x->x + (x-with-digits-reversed).

Terms

a(0) =89a(1) =187a(2) =968a(3) =1837a(4) =9218a(5) =17347a(6) =91718a(7) =173437a(8) =907808a(9) =1716517a(10) =8872688a(11) =17735476a(12) =85189247a(13) =159487405a(14) =664272356a(15) =1317544822a(16) =3602001953a(17) =7193004016a(18) =13297007933a(19) =47267087164a(20) =93445163438