a(n) = n-th multiple of n with digit sum n.

Terms

a(0) =1a(1) =20a(2) =21a(3) =220a(4) =320a(5) =132a(6) =1015a(7) =1016a(8) =81a(9) =1090a(10) =4070a(11) =516a(12) =2353a(13) =2534a(14) =1185a(15) =3760a(16) =3842a(17) =846a(18) =5662a(19) =14960a(20) =3738a(21) =7546a(22) =12857a(23) =7296a(24) =28825a(25) =25298a(26) =6885a(27) =39088a(28) =43877a(29) =78960