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Math Help - simple but hard

  1. #1
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    simple but hard

    Determine all integers n > 1 such that
    (2^n) + 1/n^2
    is an integer.
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  2. #2
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    Re: simple but hard

    The way you have written it seems a little unclear. Do you mean \frac{\left ( 2^{n}+1 \right )}{n^{2}}
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  3. #3
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    Re: simple but hard

    yes that one.
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