Trajectory of 27 under map x->x + (x-with-digits-reversed).

Terms

a(0) =27a(1) =99a(2) =198a(3) =1089a(4) =10890a(5) =20691a(6) =40293a(7) =79497a(8) =158994a(9) =658845a(10) =1207701a(11) =2284722a(12) =4559544a(13) =9019098a(14) =17928207a(15) =88211178a(16) =175322466a(17) =839546037a(18) =1570191975a(19) =7362102726a(20) =13634115363a(21) =49985258994a(22) =99970517988