Smallest number beginning with n and having a digit sum n.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =6a(6) =7a(7) =8a(8) =9a(9) =109a(10) =119a(11) =129a(12) =139a(13) =149a(14) =159a(15) =169a(16) =179a(17) =189a(18) =199a(19) =2099a(20) =2199a(21) =2299a(22) =2399a(23) =2499a(24) =2599a(25) =2699a(26) =2799a(27) =2899a(28) =2999a(29) =30999