The smallest number larger than n with digital sum equal to n.

Terms

a(0) =10a(1) =11a(2) =12a(3) =13a(4) =14a(5) =15a(6) =16a(7) =17a(8) =18a(9) =19a(10) =29a(11) =39a(12) =49a(13) =59a(14) =69a(15) =79a(16) =89a(17) =99a(18) =199a(19) =299a(20) =399a(21) =499a(22) =599a(23) =699a(24) =799a(25) =899a(26) =999a(27) =1999a(28) =2999a(29) =3999