title: Odd DFA for Language
body: <p>Can somebody please help me draw a NFA that accepts this language:</p>
  
  <p><code>{ w | the length of w is 6k + 1 for some k ≥ 0 }</code></p>
  
  <p>I have been stuck on this problem for several hours now. I do not understand where the <code>k</code> comes into play and how it is used in the diagram...</p>