     n    m      integral       rel error     err const

     1    2    0.3348973E+01    0.2504E+00    0.8161E+00
     2    4    0.4436926E+01    0.6904E-02    0.1730E-01
     3    6    0.4467412E+01    0.8090E-04    0.1524E-03
     4    8    0.4467774E+01    0.2135E-06    0.7027E-06
     5   10    0.4467771E+01    0.5336E-06    0.1995E-08
     6   12    0.4467773E+01    0.1067E-06    0.3838E-11
     7   14    0.4467776E+01    0.5336E-06    0.5334E-14
     8   16    0.4467773E+01    0.0000E+00    0.5607E-17
     9   18    0.4467775E+01    0.4269E-06    0.4614E-20
    10   20    0.4467773E+01    0.1067E-06    0.3054E-23
