Trajectory of 29 under map x->x + (x-with-digits-reversed).

Terms

a(0) =29a(1) =121a(2) =242a(3) =484a(4) =968a(5) =1837a(6) =9218a(7) =17347a(8) =91718a(9) =173437a(10) =907808a(11) =1716517a(12) =8872688a(13) =17735476a(14) =85189247a(15) =159487405a(16) =664272356a(17) =1317544822a(18) =3602001953a(19) =7193004016a(20) =13297007933a(21) =47267087164