Smallest proper multiple of n with digit sum n.

Terms

a(0) =10a(1) =20a(2) =12a(3) =40a(4) =50a(5) =24a(6) =70a(7) =80a(8) =18a(9) =190a(10) =209a(11) =48a(12) =247a(13) =266a(14) =195a(15) =448a(16) =476a(17) =198a(18) =874a(19) =3980a(20) =399a(21) =2398a(22) =1679a(23) =888a(24) =4975a(25) =1898a(26) =999a(27) =7588a(28) =4988a(29) =39990