title: Is 2^(2n) = O(2^n)
body: <p><pre>Is <strong>2<sup>(n+1)</sup> = O(2<sup>n</sup>)</strong>?</pre></p>
  
  <p>I believe that this one is correct because <code>n+1 ~= n</code>.</p>
  
  <hr>
  
  <p><pre>Is <strong>2<sup>(2n)</sup> = O(2<sup>n</sup>)</strong>?</pre></p>
  
  <p>This one seems like it would use the same logic, but I'm not sure.</p>