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A084690 4^n uses only distinct decimal digits. 0


%S 0,1,2,3,4,5,6,7,10

%N 4^n uses only distinct decimal digits.

%C There are exactly 9 such n's that 4^n uses only distinct digits.

%e 10 is (the last!) term because 4^10=1048576 uses only distinct digits.

%K fini,nonn,full,base

%O 1,3

%A _Zak Seidov_, Jul 01 2003

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Last modified December 4 04:22 EST 2020. Contains 338921 sequences. (Running on oeis4.)