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A174160号 |
| 对称三角序列:t(n,m)=2*欧拉[n,m-1]-(二项式[n-1,m-1]*二项式[n,m-1]/m)^2 |
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1, 1, 1, 1, -1, 1, 1, -14, -14, 1, 1, -48, -268, -48, 1, 1, -111, -1896, -1896, -111, 1, 1, -201, -8643, -25793, -8643, -201, 1, 1, -290, -29830, -208862, -208862, -29830, -290, 1, 1, -292, -83680, -1206508, -2799316, -1206508, -83680, -292, 1, 1, 1
(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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1,8
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评论
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行总和为:
{1, 2, 1, -26, -362, -4012, -43479, -477962, -5380274, -62040980,...}.
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链接
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配方奶粉
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t(n,m)=2*欧拉[n,m-1]-(二项式[n-1,m-1]*二项式[n,m-1]/m)^2
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例子
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{1},
{1, 1},
{1, -1, 1},
{1, -14, -14, 1},
{1, -48, -268, -48, 1},
{1, -111, -1896, -1896, -111, 1},
{1, -201, -8643, -25793, -8643, -201, 1},
{1,-290,-29830,-208662,-208662,-29830,-290,1},
{1,-292,-83680,-1206508,-279316,-1206508,-83680,-292,1},
{1, 1, -195920, -5440016, -25384556, -25384556, -5440016, -195920, 1, 1}
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数学
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<<离散数学`组合数学`
t[n_,m_]=2*欧拉[n,m-1]-(二项式[n-1,m-1]*二项式[n,m-1]/m)^2;
表[表[t[n,m],{m,1,n}],{n,1,10}];
压扁[%]
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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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