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A145036号 |
| T(n,k)是腰围k(腰围(α)=max(Im(α)))的幂等降阶和保序部分变换(n链)的个数。 |
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1, 1, 1, 1, 2, 2, 1, 4, 4, 5, 1, 8, 8, 10, 14, 1, 16, 16, 20, 28, 41, 1, 32, 32, 40, 56, 82, 122, 1, 64, 64, 80, 112, 164, 244, 365, 1, 128, 128, 160, 224, 328, 488, 730, 1094, 1, 256, 256, 320, 448, 656, 976, 1460, 2188, 3281, 1, 512, 512, 640, 896, 1312, 1952, 2920, 4376, 6562, 9842
(列表;桌子;图表;参考;听;历史;文本;内部格式)
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抵消
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0,5
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链接
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配方奶粉
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T(n,k)=2^(n-k-1)(1+3^(k-1)),k>0。
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例子
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T(3,2)=4,因为腰2的(3-链的)幂等降阶和保阶部分变换正好有4个,即:2->2,(1,2)->(1,2),(2,3)->(2,2),(1,2,3)->(1,2,2)。
1;
1,1;
1,2,2;
1,4,4,5;
1,8,8,10,14;
1,16,16,20,28,41;
1,32,32,40,56,82,122;
1,64,64,80,112,164,244,365;
1,128,128,160,224,328,488,730,1094;
1,256,256,320,448,656,976,1460,2188,3281;
1,512,512,640,896,1312,1952,2920,4376,6562,9842;
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交叉参考
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关键字
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作者
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状态
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经核准的
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