2: 0.503437279335
    3: 0.633786312847
    4: 0.665158146701
    5: 0.670813898229
    6: 0.679896720384
    7: 0.764484028117
    8: 0.787695474600
   39: 0.792519964229
   42: 0.795098514256
   44: 0.798589168884
   45: 0.804777403437

2 3 4 5 6 7 8 39 42 44 45

Fit of radii by a power law r = a0*n^a1:
  a0 = 0.70623  a1 = -0.45505