%I A020666
%S A020666 1023456789,32043,2326,763,309,159,56,104,49,36,25,15,25,17,17,15,16,7,
               5,
%T A020666 6,6,5,11,9,14,5,5,5,5,9,5,8,11,4,4,6,5,7,3,5,4,4,6,4,3,6,3,3,4,4,5,4,
               3,
%U A020666 6,4,4,3,4,4,3,3,3,3,3,3,4,3,2,3,2,3,3,3,3,4,3,3,3,2,3,4,2,3,2,3,3,2,2,
               2
%N A020666 a(n)^n is the least n-th power containing every digit.
%C A020666 It is extremely probable that a(n) = 2 for all n >= 169.
%Y A020666 Cf. A020667.
%Y A020666 Sequence in context: A096213 A048939 A095733 this_sequence A074205 A061604 
               A050278
%Y A020666 Adjacent sequences: A020663 A020664 A020665 this_sequence A020667 A020668 
               A020669
%K A020666 nonn,base
%O A020666 1,1
%A A020666 David W. Wilson (davidwwilson(AT)comcast.net)