1              -0.00381209               0.00449561
           2               0.00177675               0.00731344
           4               0.00613939               0.01400201
           8               0.03144767               0.02535925
          16               0.17101855               0.06251926
          32               0.58224923               0.32891365
          64               1.75466289               1.14669117
         128               3.81350304               2.62272652
         256               7.42339474               5.04885514
         512              13.40097837               9.07818370
        1024              25.40567905              17.19301311
        2048              50.39343585              34.16800563