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例子
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方阵A(n,k)开始:
1, 1, 1, 1, 1, 1, 1, 1, ...
1, 1, 1, 1, 1, 1, 1, 1, ...
2, 2, 2, 2, 2, 2, 2, 2, ...
2, 3, 5, 9, 17, 33, 65, 129, ...
3, 6, 14, 36, 98, 276, 794, 2316, ...
3, 10, 42, 190, 882, 4150, 19722, 94510, ...
4, 20, 132, 980, 7812, 65300, 562692, 4939220, ...
4, 35, 429, 5705, 78129, 1083425, 15105729, 211106945, ...
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