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A165737
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Positive integers n such that the sum of decimal digits of (16^n-1) is divisible by n.
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0
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1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 17, 18, 23, 37, 43, 46, 60, 119, 183, 223
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OFFSET
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1,2
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COMMENTS
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Comparing with A165722 there is one additional term a(8)=9.
No other terms below 10^5.
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LINKS
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PROG
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(PARI) isok(n) = (sumdigits(16^n-1) % n) == 0; \\ Michel Marcus, Oct 16 2013
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CROSSREFS
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KEYWORD
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base,more,nonn
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AUTHOR
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STATUS
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approved
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