| 评论
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第n行有1+n(n+1)/2个术语(n>=>=0). 行总和产生排列编号(A000522号). T(n,,n(n+1)/2)=) =不!。总和(k*T型(n个,k),_{k=0..n(n+1)/2)=}k*T型(n个,k) =113432英镑(n))).
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| 例子
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1;
1,,1;
1,,1,,1,,2;
1,,1,,1,,三,,2,,2,,6;
1,,1,,1,,三,,三,,4,,8,,8,,6,,6,,24;
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