5: 0.744257158931
    6: 0.747776845713
    7: 0.766911884377
    8: 0.786951170529
    9: 0.801421656551
   11: 0.811409919523
   12: 0.816245289797
   13: 0.823408986604
   14: 0.829187198386
   15: 0.835638555906
   16: 0.841319719782
   17: 0.846916767441
   18: 0.849691107901
   19: 0.850827285609
   20: 0.854891766089
   21: 0.857084190404
   22: 0.863051022602
   23: 0.863329556916
   24: 0.864122627550
   25: 0.867337533092
   26: 0.867701184899
   27: 0.869212242352
   28: 0.871448119857
   29: 0.871586755900
   30: 0.874399034675
   35: 0.879683901646
   46: 0.879693717597
   56: 0.882459227306
   57: 0.883839719672
   58: 0.883938214127
   59: 0.884358096583
   73: 0.884742237371
   74: 0.885076553952
   75: 0.885863511373
   76: 0.887678381994
   78: 0.891227412967
   79: 0.892892087840
   80: 0.893643733597
   81: 0.894609452607
   83: 0.894621225528
   85: 0.895432278951

5 6 7 8 9 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 35 46 56 57 58 59 73 74 75 76 78 79 80 81 83 85

Fit of radii by a power law r = a0*n^a1:
  a0 = 0.66532  a1 = -0.10387