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A131424号 |
| 按行读取三角形:T(n,k)=素数(n)+素数(k)-3,1<=k<=n。 |
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三
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1, 2, 3, 4, 5, 7, 6, 7, 9, 11, 10, 11, 13, 15, 19, 12, 13, 15, 17, 21, 23, 16, 17, 19, 21, 25, 27, 31, 18, 19, 21, 23, 27, 29, 33, 35, 22, 23, 25, 27, 31, 33, 37, 39, 43, 28, 29, 31, 33, 37, 39, 43, 45, 49, 55, 30, 31, 33, 35, 39, 41, 45, 47, 51, 57, 59
(列表;桌子;图表;参考文献;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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左边框=A006093号,(素数-1):(1,2,4,6,10,12,…)。右边框=A131426号(2*素数-3):(1,3,7,11,19,23,31,…)。行总和=A131425号: (1, 5, 16, 33, 68, 101, 156, ...).
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链接
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配方奶粉
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例子
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三角形的前几行是:
1;
2, 3;
4, 5, 7;
6, 7, 9, 11;
10, 11, 13, 15, 19;
12, 13, 15, 17, 21, 23;
16, 17, 19, 21, 25, 27, 31;
18, 19, 21, 23, 27, 29, 33, 35;
22, 23, 25, 27, 31, 33, 37, 39, 43;
...
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黄体脂酮素
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(PARI)T(n,k)=如果(k<=n,素数(n)+素数(k)-3,0)\\安德鲁·霍罗伊德2018年9月1日
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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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扩展
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状态
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经核准的
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