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例子
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{12}的T(2,1)=1;
{123}的T(3,1)=1,T(3,2)=1;{13|2};
{1234}的T(4,1)=1,T(4,2)=4,T(4,3)=1;{14|23}, {13|24}, {124|3}, {134|2}; {14|2|3}.
三角形开始:
1;
1, 1;
1, 4, 1;
1, 11, 9, 1;
1, 26, 48, 16, 1;
1, 57, 202, 140, 25, 1;
1, 120, 747, 916, 325, 36, 1;
1, 247, 2559, 5071, 3045, 651, 49, 1;
1, 502, 8362, 25300, 23480, 8260, 1176, 64, 1;
1, 1013, 26520, 117962, 159736, 84456, 19404, 1968, 81, 1;
...
三角形T(n,k),0<=k<=n,由[1,0,2,0,3,0,4,0,…]三角形[0,1,0,1,0,0,0,,…]开始:
1;
1, 0;
1, 1, 0;
1, 4, 1, 0;
1, 11, 9, 1, 0;
1, 26, 48, 16, 1, 0;
1, 57, 202, 140, 25, 1, 0;
1, 120, 747, 916, 325, 36, 1, 0;
1, 247, 2559, 5071, 3045, 651, 49, 1, 0;
1, 502, 8362, 25300, 23480, 8260, 1176, 64, 1, 0;
1, 1013, 26520, 117962, 159736, 84456, 19404, 1968, 81, 1, 0;
...
(完)
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