Examples of a point of a cycle of length L
such that this point lies on the smallest radius
that can be visited by any cycle of that length.

      A368125
     Length of
       cycle    coordinates
   n       L       i      j         R^2 = i^2 + j^2
   |       |       |      |           |         R

   1       1       0      0           0       0.000000
   2       8       1      0           1       1.000000
   3      12       2      0           4       2.000000
   4      60       5      0          25       5.000000
   5      24       7      5          74       8.602325
   6      72      17      4         305      17.464249
   7     300      34      2        1160      34.058773
   8     264      33     32        2113      45.967380
   9     216      63     16        4225      65.000000
  10     624      85     62       11069     105.209315
  11     168     138     47       21253     145.784087
  12    1692     144    143       41185     202.940878
  13    2232     195    191       74506     272.957872
  14    1752     372     86      145780     381.811472
  15    4824     493    371      380690     617.000810
  16    1560     809    267      725770     851.921358
  17    9804     838    842     1411208    1187.942760
  18   17064    1128   1129     2547025    1595.940162
  19   13080     494   2173     4965965    2228.444525
  20   35040    2172   2871    12960225    3600.031250
  21   12456    4720   1549    24677801    4967.675613
  22   57084    4900   4899    48010201    6928.939385
  23  123096    6583   6579    86619130    9306.939884
  24   92952   12670   2872   168777284   12991.431176