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A238156号 |
| 三角形T(n,k),0<=k<=n,按行读取,由(0,1,0,0,0,0,0A084938号. |
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1, 0, 2, 0, 2, 3, 0, 2, 7, 4, 0, 2, 11, 16, 5, 0, 2, 15, 36, 30, 6, 0, 2, 19, 64, 91, 50, 7, 0, 2, 23, 100, 204, 196, 77, 8, 0, 2, 27, 144, 385, 540, 378, 112, 9, 0, 2, 31, 196, 650, 1210, 1254, 672, 156, 10, 0, 2, 35, 256, 1015, 2366, 3289, 2640, 1122, 210, 11
(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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0,3
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评论
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链接
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配方奶粉
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通用格式:(1-x)/(1-x-2*x*y+x^2*y^2)。
和{k=0..n}T(n,k)*2^k=4^n=A000302号(n) ●●●●。
T(n,k)=T(n-1,k)+2*T(n-1,k-1)-T(n-2,k-2),T(0,0)=1,T(1,0)=0,T(1,1)=2,如果k<0或如果k>n。
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例子
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三角形开始:
1;
0, 2;
0, 2, 3;
0, 2, 7, 4;
0, 2, 11, 16, 5;
0, 2, 15, 36, 30, 6;
0, 2, 19, 64, 91, 50, 7;
0, 2, 23, 100, 204, 196, 77, 8;
0, 2, 27, 144, 385, 540, 278, 112, 9;
0, 2, 31, 196, 650, 1210, 1254, 672, 156, 10;
0, 2, 35, 256, 1015, 2366, 3289, 2640, 1122, 210, 11;
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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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状态
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经核准的
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