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A243828号 |
| 半长n的Dyck路径的数量A(n,k)正好有两次(可能重叠)出现由k的二进制展开式给出的连续步长模式,其中1=U=(1,1)和0=D=(1,-1);方阵A(n,k),n>=0,k>=0。 |
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14
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0, 0, 0, 0, 0, 2, 0, 0, 2, 0, 0, 0, 1, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 1, 6, 0, 0, 0, 0, 0, 0, 6, 10, 0, 0, 0, 0, 0, 1, 2, 20, 15, 0, 0, 0, 0, 0, 0, 3, 15, 50, 21, 0, 0, 0, 0, 0, 0, 2, 12, 69, 105, 28, 0, 0, 0, 0, 0, 0, 1, 15, 40, 252, 196, 36, 0, 0, 0, 0, 0, 0, 0, 5, 69, 135, 804, 336, 45, 0, 0
(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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0,6
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链接
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例子
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方阵A(n,k)开始:
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ...
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ...
2, 2, 1, 0, 0, 0, 0, 0, 0, 0, ...
0, 0, 3, 1, 0, 1, 0, 0, 0, 0, ...
0, 0, 6, 6, 2, 3, 2, 1, 0, 0, ...
0,0,10,20,15,12,15,5,0,2。。。
0, 0, 15, 50, 69, 40, 69, 24, 3, 15, ...
0, 0, 21, 105, 252, 135, 252, 98, 28, 69, ...
0, 0, 28, 196, 804, 441, 804, 378, 180, 273, ...
0, 0, 36, 336, 2349, 1428, 2349, 1386, 954, 1056, ...
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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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