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A195872号 |
| 正整数a,其中有满足a≤b的(-1/2)-勾股三元组(a,b,c)。 |
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7
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1, 2, 3, 4, 5, 5, 6, 6, 6, 7, 7, 8, 9, 9, 9, 10, 10, 10, 11, 11, 11, 12, 12, 12, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 16, 16, 16, 17, 17, 17, 18, 18, 18, 18, 18, 19, 19, 19, 20, 20, 20, 21, 21, 21, 22, 22, 22, 22, 22, 23, 23, 23, 24, 24, 24, 25, 25, 26, 26, 26, 26
(列表;图表;参考;听;历史;文本;内部格式)
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抵消
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1,2
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评论
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请参见A195770型有关k-Pythagorean三元组、原始k-Pytha三元组和相关序列列表的定义。
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链接
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例子
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(-1/2)-毕达哥拉斯三元组:
1,2,2
2,4,4
3,6,6
4,8,8
5,48,47
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数学
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z8=800;z9=400;z7=100;
k=-1/2;c[a_,b_]:=平方[a^2+b^2+k*a*b];
d[a_,b_]:=如果[IntegerQ[c[a,b]],{a,b,c[a、b]},0]
t[a_]:=表[d[a,b],{b,a,z8}]
u[n_]:=删除[t[n],位置[t[n],0]]
表[u[n],{n,1,15}]
t=表[u[n],{n,1,z8}];
压扁[位置[t,{}]]
u=压扁[删除[t,位置[t,{}]];
x[n_]:=u[[3 n-2]];
y[n]:=u[[3n-1]];
z[n]:=u[[3 n]];
x1[n_]:=如果[GCD[x[n],y[n]
y1[n_]:=如果[GCD[x[n],y[n]
z1[n_]:=如果[GCD[x[n],y[n]
f=表[x1[n],{n,1,z9}];
g=表[y1[n],{n,1,z9}];
h=表[z1[n],{n,1,z9}];
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交叉参考
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关键词
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非n
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作者
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状态
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已批准
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