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A140765号 |
| 数组T(n,k)=反对偶读取的二项式(k+2,k-1)+n*二项式。 |
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1
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0, 1, 1, 2, 4, 4, 3, 7, 10, 10, 4, 10, 16, 20, 20, 5, 13, 22, 30, 35, 35, 6, 16, 28, 40, 50, 56, 56, 7, 19, 34, 50, 65, 77, 84, 84, 8, 22, 40, 60, 80, 98, 112, 120, 120, 9, 25, 46, 70, 95, 119, 140, 156, 165, 165, 10, 28, 52, 80, 110, 140, 168, 192, 210, 220, 220, 11, 31, 58
(列表;桌子;图表;参考;听;历史;文本;内部格式)
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偏移
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0.4
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链接
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D.A.Sardelis、T.M.Valahas、,关于多维勾股数,arxiv:0805.4070[math.GM],2008,表6,等式12。
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配方奶粉
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T(n,k)=二项式(k+2,3)+n*二项式。
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例子
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数组从第n=0行开始,第k列>=0为
0, 1, 4, 10, 20, 35, 56, 84, 120, 165, 220, ...
1, 4, 10, 20, 35, 56, 84, 120, 165, 220, 286, ...
2, 7, 16, 30, 50, 77, 112, 156, 210, 275, 352, ...
3, 10, 22, 40, 65, 98, 140, 192, 255, 330, 418, ...
4, 13, 28, 50, 80, 119, 168, 228, 300, 385, 484, ...
5, 16, 34, 60, 95, 140, 196, 264, 345, 440, 550, ...
...
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MAPLE公司
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A140765号:=proc(n,k)二项式(k+2,k-1)+n*二项式;结束进程:
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数学
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T[n_,k_]:=二项式[k+2,k-1]+n二项式[C+2,k];
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交叉参考
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关键词
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作者
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扩展
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状态
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经核准的
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