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A224901型 |
| 使k*sigma(n)形成递增序列的最小正整数k。 |
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1
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1, 1, 1, 1, 2, 2, 4, 3, 4, 3, 5, 3, 7, 5, 6, 5, 9, 5, 10, 5, 7, 7, 11, 5, 10, 8, 9, 7, 14, 6, 14, 8, 11, 10, 12, 7, 17, 11, 12, 8, 18, 8, 18, 10, 11, 12, 19, 8, 18, 12, 16, 12, 22, 10, 17, 11, 17, 16, 25, 9, 25, 17, 16, 14, 22, 13, 28, 16, 22, 15, 31, 12, 32, 21, 20, 18, 27, 16, 34, 15, 24
(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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1,5
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链接
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例子
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乘积a(n)*σ(n)形成一个递增序列,开始于:
[1, 3, 4, 7, 12, 24, 32, 45, 52, 54, 60, 84, 98, 120, 144, 155, 162, 195, ...].
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黄体脂酮素
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(PARI)a(n)=如果(n==1,1,(a(n-1)*西格玛(n-1))\西格玛(n)+1)
对于(n=1,80,print1(a(n),“,”)
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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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