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A062927
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Numbers k such that k divides the sum of digits of 9^k.
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2
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OFFSET
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1,2
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COMMENTS
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Next term after 243, if it exists, is greater than 30000. - Ryan Propper, Jun 18 2005
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LINKS
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EXAMPLE
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3 divides the sum of digits of 9^3 (i.e., 7 + 2 + 9 = 18), so 3 is a term.
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MATHEMATICA
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Do[If[Mod[Plus @@ IntegerDigits[9^n, 10], n] == 0, Print[n]], {n, 1, 30000}] (* Ryan Propper, Jun 18 2005 *)
Select[Range[300], Divisible[Total[IntegerDigits[9^#]], #]&] (* Harvey P. Dale, Jun 03 2015 *)
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CROSSREFS
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KEYWORD
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hard,more,nonn,base
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AUTHOR
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STATUS
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approved
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