0  7.0199
  1  49.1987
  2  346.303
  3  2566.77
  4  17260.7
  5  116738
  6  771062
  7  5.21591e+06
  8  3.88878e+07
  9  2.70565e+08
  10  2.10434e+09
  11  3.13356e+10
  12  9.53248e+10
  13  9.04553e+11
  14  1.10131e+13
  15  1.54037e+13
  16  7.79618e+13
  17  4.59383e+14
  18  3.04602e+15
  19  2.17081e+16
  20  6.47524e+16