# simple but hard

• Oct 2nd 2012, 02:14 AM
geniusgarvil
simple but hard
Determine all integers n > 1 such that
(2^n) + 1/n^2
is an integer.
• Oct 2nd 2012, 02:26 AM
grillage
Re: simple but hard
The way you have written it seems a little unclear. Do you mean $\frac{\left ( 2^{n}+1 \right )}{n^{2}}$
• Oct 3rd 2012, 01:34 AM
geniusgarvil
Re: simple but hard
yes that one.