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Solution to ((2^n)+1)/(n^2)

  1. Apr 3, 2014 #1
    Find all positive integer answers for ((2^n)+1)/(n^2) where n is an integer greater then one.
    The only answer i can find is three, i wrote a program to brute force it and have gotten up to n=32000 but as for going about solving it i have no clue.
     
  2. jcsd
  3. Apr 3, 2014 #2
    Where did this question orginate?
     
  4. Apr 3, 2014 #3
    A friend from school broght it in... I have no clue where he got it from though.
     
  5. Apr 3, 2014 #4
    Is it homework?
     
  6. Apr 3, 2014 #5
    No, its just a problem we where trying to solve.
     
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