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例子
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不规则三角形T(n,k)开始于:
n\k 0 1 2 3 4 5 6 7 8。。。
1: 1
2: 1
3: 2 1
4: 4 1 4
5: 12 18 12 8 6 2
6: 44 56 120 28 88 4 36 0 8
...
n=4:k=0:
[[1,1,1,1], [1,1,1,1], [1,1,1,1], [1,1,1,1]],
[[1,0,0,1], [0,1,1,0], [0,1,1,0], [1,0,0,1]],
[[1,1,0,1], [1,1,1,0], [0,1,1,1], [1,0,1,1]],
[[1,0,1,1], [0,1,1,1], [1,1,1,0], [1,1,0,1]];
k=1:
[[1,1,1,1], [1,0,0,1], [1,0,0,1], [1,1,1,1]];
k=2:
[[1,1,1,1], [1,0,1,1], [1,1,0,1], [1,1,1,1]],
[[1,1,1,1],[1,1,0,1],[1,1,1,1],[1,1,1,1]],
[[1,1,0,1], [1,0,1,0], [0,1,0,1], [1,0,1,1]],
[[1,0,1,1], [0,1,0,1], [1,0,1,0], [1,1,0,1]].
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