2: 0.539012084453
    3: 0.609644808741
    4: 0.785398163397
   30: 0.792019026461
   38: 0.797042556835
   39: 0.811179027292
   52: 0.822530842068
   67: 0.824515655814
   68: 0.835021788302
   99: 0.840299937025
  119: 0.845084379636
  120: 0.851658165016
  186: 0.854200454647
  187: 0.857318924081
  188: 0.861342195310
  215: 0.861566348449
  216: 0.865547356360
  303: 0.867439103592
  304: 0.869996709656
  339: 0.870019152703
  340: 0.872333092427
  407: 0.872662066655
  446: 0.872846723718
  447: 0.874447456114
  448: 0.876332611787
  449: 0.878148038181
  572: 0.878582670631
  619: 0.879452627629
  620: 0.880847904124
  621: 0.882234757022
  765: 0.882959729211
  820: 0.883442085435
  821: 0.884515826536
  822: 0.885607247139
  986: 0.886311822818
 1050: 0.886657468814
 1166: 0.886967611989
 1235: 0.888959828544
 1435: 0.889012329398
 1512: 0.891107884604
 1733: 0.891266488328
 1817: 0.891940130909
 2058: 0.892683904710
 2412: 0.894293133193
 2792: 0.894945547014
 2793: 0.895265350278
 3203: 0.895590504942
 3520: 0.896081785624
 3978: 0.896992915297
 4463: 0.897349249660
 4464: 0.897548799932
 4838: 0.897572057655
 4978: 0.897583424519
 5372: 0.898193201096
 5935: 0.898914134730
 6525: 0.899045044932
 6975: 0.899101229270
 7614: 0.899632285937
 8281: 0.900120395780
 9503: 0.900307905041

2 3 4 30 38 39 52 67 68 99 119 120 186 187 188 215 216 303 304 339 340 407 446 447 448 449 572 619 620 621 765 820 821 822 986 1050 1166 1235 1435 1512 1733 1817 2058 2412 2792 2793 3203 3520 3978 4463 4464 4838 4978 5372 5935 6525 6975 7614 8281 9503

Fit of radii by a power law r = a0*n^a1:
  a0 = 0.50689  a1 = -0.49570