2: 0.501581917220
    3: 0.639008814987
    4: 0.678617254976
    5: 0.680453386586
    6: 0.684934735810
    7: 0.766702179897
   16: 0.769943623120
   19: 0.793849789648
   37: 0.798642683217

2 3 4 5 6 7 16 19 37

Fit of radii by a power law r = a0*n^a1:
  a0 = 0.74008  a1 = -0.45662