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A155947号 |
| 多项式系数的三角形:q(x,n)=(1-x)^(n+1)*Sum[(k+n)^n*x^k,{k,0,Infinity}];p(x,n)=q(x,n)+x^n*q(1/x,n,n)。 |
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1, 1, 2, 5, -6, 5, 19, -13, -13, 19, 337, -1044, 1462, -1044, 337, 2101, -5073, 3092, 3092, -5073, 2101, 62281, -314222, 718559, -931796, 718559, -314222, 62281, 543607, -2329829, 3835365, -2044103, -2044103, 3835365, -2329829, 543607
(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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行总和为:2*n!
{2, 2, 4, 12, 48, 240, 1440, 10080, 80640, 725760, 7257600,...}.
结果与欧拉数无穷和形式有关。
这是找到无穷和恒等式的结果:
和[二项式[k+n,n]*x^k,{k,0,无限}]=1/(1-x)^(n+1)。
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链接
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配方奶粉
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q(x,n)=(1-x)^(n+1)*和[(k+n)^n*x^k,{k,0,无穷}];
q(x,n)=(1-x)^(n+1)*LerchPhi[x,-n,n];
p(x,n)=q(x,n)+x^n*q(1/x,n;
t(n,m)=系数(p(x,n))
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例子
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{1, 1},
{2},
{5, -6, 5},
{19, -13, -13, 19},
{337, -1044, 1462, -1044, 337},
{2101, -5073, 3092, 3092, -5073, 2101},
{62281, -314222, 718559, -931796, 718559, -314222, 62281},
{543607, -2329829, 3835365, -2044103, -2044103, 3835365, -2329829, 543607},
{22542017, -158151816, 509366204, -972472504, 1197512838, -972472504, 509366204, -158151816, 22542017},
{253202761, -1572381217, 4145530310, -5521116358, 2695127384, 2695127384, -5521116358, 4145530310, -1572381217, 253202761},
{13486784401, -121343461986, 506850150853, -1285984548968, 2186943445546, -2599897482092, 2186943445546, -1285984548968, 506850150853, -121343461986, 13486784401}
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数学
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清除[p,x,n,m];
p[x_,n_]=(1-x)^(n+1)*Sum[(k+n)^n*x^k,{k,0,无限}];
表[FullSimplify[ExpandAll[p[x,n]]],{n,0,10}];
表[系数列表[FullSimplify[ExpandAll[p[x,n]]],x]
+反向[CoefficientList[FullSimplify[ExpandAll[p[x,n]]],x]],{n,0,10}];
压扁[%]
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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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