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A084689
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3^n uses only distinct decimal digits.
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0
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OFFSET
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1,3
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COMMENTS
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There are exactly 9 such n's that 3^n uses only distinct digits (in base 10).
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LINKS
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EXAMPLE
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9 is (the last!) term because 3^9=19683 uses only distinct digits.
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MATHEMATICA
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Select[Range[0, 10], Max[DigitCount[3^#]]<2&] (* Harvey P. Dale, Jan 24 2021 *)
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CROSSREFS
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KEYWORD
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fini,nonn,full,base
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AUTHOR
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STATUS
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approved
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