Trajectory of 1 under map x->x + (x-with-digits-reversed).

Terms

a(0) =1a(1) =2a(2) =4a(3) =8a(4) =16a(5) =77a(6) =154a(7) =605a(8) =1111a(9) =2222a(10) =4444a(11) =8888a(12) =17776a(13) =85547a(14) =160105a(15) =661166a(16) =1322332a(17) =3654563a(18) =7309126a(19) =13528163a(20) =49710694a(21) =99312488a(22) =187733887a(23) =976071668a(24) =1842242347a(25) =9274664828a(26) =17559329557a(27) =93151725128a(28) =175304440267a(29) =937348843838