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例子
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A(4,1)=4:[1,1,1,1]。
A(3,2)=20=3+3+2+3+2+2+2+3:[1,1,1],[2,1,1],[1,2,1],[2,2,1],[1,1,2],[2,1,1,4],[2,2,2],[1,2,2]。
A(2,3)=15=2+2+2+1+2+1+1+2:[1,1],[2,1],[3,1],[1,2],[2,2]、[3,2]和[1,3],[2,3]和[3,3]。
A(1,4)=4=1+1+1+1:[1],[2],[3],[4]。
方阵A(n,k)开始:
0, 0, 0, 0, 0, 0, 0, 0, ...
0, 1, 2, 3, 4, 5, 6, 7, ...
0, 2, 7, 15, 26, 40, 57, 77, ...
0, 3, 20, 63, 144, 275, 468, 735, ...
0, 4, 52, 243, 736, 1750, 3564, 6517, ...
0, 5, 128, 891, 3584, 10625, 25920, 55223, ...
0, 6, 304, 3159, 16896, 62500, 182736, 453789, ...
0, 7, 704, 10935, 77824, 359375, 1259712, 3647119, ...
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