RATS(n): Reverse Add Then Sort the digits.

Terms

a(0) =0a(1) =2a(2) =4a(3) =6a(4) =8a(5) =1a(6) =12a(7) =14a(8) =16a(9) =18a(10) =11a(11) =22a(12) =33a(13) =44a(14) =55a(15) =66a(16) =77a(17) =88a(18) =99a(19) =11a(20) =22a(21) =33a(22) =44a(23) =55a(24) =66a(25) =77a(26) =88a(27) =99a(28) =11a(29) =112