Trajectory of 17 under map x->x + (x-with-digits-reversed).

Terms

a(0) =17a(1) =88a(2) =176a(3) =847a(4) =1595a(5) =7546a(6) =14003a(7) =44044a(8) =88088a(9) =176176a(10) =847847a(11) =1596595a(12) =7553546a(13) =14007103a(14) =44177144a(15) =88354288a(16) =176599676a(17) =853595347a(18) =1597190705a(19) =6668108656a(20) =13236127322a(21) =35608290553a(22) =71117571206