a(n)^n is the least n-th power containing every digit.

Terms

a(0) =1023456789a(1) =32043a(2) =2326a(3) =763a(4) =309a(5) =159a(6) =56a(7) =104a(8) =49a(9) =36a(10) =25a(11) =15a(12) =25a(13) =17a(14) =17a(15) =15a(16) =16a(17) =7a(18) =5a(19) =6a(20) =6a(21) =5a(22) =11a(23) =9a(24) =14a(25) =5a(26) =5a(27) =5a(28) =5a(29) =9