     n    m        integral         rel error   err const

     1    2   0.33489746814958D+01  0.2504E+00  0.8161D+00
     2    4   0.44369266068371D+01  0.6904E-02  0.1730D-01
     3    6   0.44674130628545D+01  0.8071E-04  0.1524D-03
     4    8   0.44677713487831D+01  0.5143E-06  0.7027D-06
     5   10   0.44677736372189D+01  0.2052E-08  0.1995D-08
     6   12   0.44677736463627D+01  0.5606E-11  0.3838D-11
     7   14   0.44677736463877D+01  0.1471E-13  0.5334D-14
     8   16   0.44677736463878D+01  0.5964E-15  0.5607D-17
     9   18   0.44677736463878D+01  0.1789E-14  0.4614D-20
    10   20   0.44677736463878D+01  0.3380E-14  0.3054D-23
