%I A084690
%S A084690 0,1,2,3,4,5,6,7,10
%N A084690 4^n uses only distinct digits.
%C A084690 There are exactly 9 such n's that 4^n uses only distinct digits.
%e A084690 10 is (the last!) term because 4^10=1048576 uses only distinct digits.
%Y A084690 Sequence in context: A007496 A082274 A029804 this_sequence A072794 A119257 
               A102455
%Y A084690 Adjacent sequences: A084687 A084688 A084689 this_sequence A084691 A084692 
               A084693
%K A084690 fini,nonn,full
%O A084690 1,3
%A A084690 Zak Seidov (zakseidov(AT)yahoo.com), Jul 01 2003