2;
5, 5;
9, 16, 9;
14, 35, 35, 14;
20, 64, 90, 64, 20;
27, 105, 189, 189, 105, 27;
k个 = 0 1 2 3 4 5
T(0,k) = 2 5 9 14 20 27
T(1,k) = 5 16 35 64 105 160
T(2,k) = 9 35 90 189 350 594
T(3,k) = 14 64 189 448 924 1728
T(4,k) = 20 105 350 924 2100 4290
T(5,k) = 27 160 594 1728 4290 9504