>hadm</code>.</li>
 <li>The entries of the submatrix <code>D_top</code> are calculated as follows
     <ul>
         <li><code>D_top</code> goes from entry <code>[0][1]</code> to
         <code>[N / 2 - 1][n + 1]</code>,</li>
         <li>the columns of <code>D_top</code> are the pairwise mutually
         exclusive sums of the previous column.</li>
     </ul>
 </li>
 <li>The entries of the submatrix <code>D_bottom</code> are calculated as
 follows
     <ul>
         <li><code>D_bottom</code> goes from entr