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

  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. Where did this question orginate?
  4. A friend from school broght it in... I have no clue where he got it from though.
  5. Is it homework?
  6. No, its just a problem we where trying to solve.
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