Smallest even number with digit sum n.

Terms

a(0) =10a(1) =2a(2) =12a(3) =4a(4) =14a(5) =6a(6) =16a(7) =8a(8) =18a(9) =28a(10) =38a(11) =48a(12) =58a(13) =68a(14) =78a(15) =88a(16) =98a(17) =198a(18) =298a(19) =398a(20) =498a(21) =598a(22) =698a(23) =798a(24) =898a(25) =998a(26) =1998a(27) =2998a(28) =3998a(29) =4998