RATS(2^n): Reverse Add the digits of 2^n, Then Sort: a(n) = A036839(2^n).

Terms

a(0) =2a(1) =4a(2) =8a(3) =16a(4) =77a(5) =55a(6) =11a(7) =499a(8) =89a(9) =277a(10) =2255a(11) =145a(12) =11a(13) =1111a(14) =44567a(15) =111499a(16) =12299a(17) =1234a(18) =3467a(19) =113467a(20) =677789a(21) =144556a(22) =1222889a(23) =14445667a(24) =4577789a(25) =55669999a(26) =1134899a(27) =11356999a(28) =12237899a(29) =445557799