N= 1(rct4)    0 solutions          1 positions           1 cases
N= 3(rct4)    1 solutions          1 positions           3 cases
N= 5(rct4)    0 solutions          3 positions           6 cases
N= 7(rct4)    0 solutions          7 positions          12 cases
N= 9(rct4)    1 solutions         24 positions          43 cases
N=11(rct4)    0 solutions         34 positions          79 cases
N=13(rct4)    0 solutions        151 positions         321 cases
N=15(rct4)    0 solutions        369 positions         827 cases
N=17(rct4)    1 solutions       1049 positions        2367 cases
N=19(rct4)    2 solutions       3565 positions        8144 cases
N=21(rct4)    1 solutions      11587 positions       26971 cases
N=23(rct4)    1 solutions      39720 positions       92488 cases       4.0 s
N=25(rct4)    3 solutions     147746 positions      350109 cases      16.7 s
N=27(rct4)    9 solutions     530501 positions     1263387 cases      62.4 s
N=29(rct4)    8 solutions    2024282 positions     4836495 cases     260.3 s
N=31(rct4)    5 solutions    7773721 positions    18885760 cases
N=33(rct4)   14 solutions   32521713 positions    78917661 cases    5175.2 s
N=35(rct4)   23 solutions  137258732 positions   334283730 cases   24006 sec
N=37(rct4)   21 solutions  552737778 positions  1360747143 cases  104617.6 s
N=39(rct4)   33 solutions 2428240982 positions  5989670715 cases