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<?php
     $som = 0;
     $machttwee = array(2,4,8,16,32,64,128,256,512,1024);
?>
     <table>
<?php
    echo " <tr><td>GETAL</td><td>CUMULATIEVE SOM</td></tr>";
       FOR($i=0;$i<10;$i++) {
                  echo "<tr><td>".$machttwee[$i]."</td>";
                   $som=$som+$machttwee[$i];
                   echo "<td>$som</td></tr>";
      }
     echo"</table>";
?>