Least Niven number for all bases from 1 to n but not for base n+1.

Terms

a(0) =3a(1) =34a(2) =10a(3) =21a(4) =8a(5) =20a(6) =12a(7) =456a(8) =168a(9) =216a(10) =40a(11) =1764a(12) =24a(13) =432a(14) =2772a(15) =780a(16) =1008a(17) =5640a(18) =720a(19) =88452a(20) =15840a(21) =840a(22) =3360a(23) =14040a(24) =288288a(25) =117600a(26) =338400a(27) =13860a(28) =40320a(29) =6283200