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A193459号 |
| 通过重新排列十进制表示法中n的数字可以写入的所有数字的不同除数的总数。 |
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4
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1, 2, 2, 3, 2, 4, 2, 4, 3, 4, 2, 8, 3, 5, 6, 6, 3, 8, 5, 6, 8, 4, 7, 12, 8, 6, 13, 8, 7, 8, 3, 7, 4, 5, 5, 12, 3, 5, 6, 8, 5, 12, 5, 6, 11, 9, 5, 16, 6, 6, 6, 8, 5, 11, 4, 11, 8, 7, 5, 12, 6, 6, 12, 9, 11, 8, 7, 8, 14, 8, 3, 13, 3, 5, 8, 7, 4, 10, 3, 10, 8
(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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链接
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例子
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a(20)={1,2,4,5,10,20}=6;
a(21)={1,2,3,4,6,7,12,21}=8;
a(22)={1,2,11,22}=4;
a(23)=#{1,2,4,8,16,23,32}=7;
a(24)={1,2,3,4,6,7,8,12,14,21,24,42}=12;
a(25)={1,2,4,5,13,25,26,52}=8;
a(26)={1,2,13,26,31,62}=6;
a(27)={1,2,3,4,6,8,9,12,18,24,27,36,72}=13;
a(28)={1,2,4,7,14,28,41,82}=8;
a(29)={1,2,4,23,29,46,92}=7。
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黄体脂酮素
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(哈斯克尔)
导入数据。列表(排列,nub)
193459牛顿=
长度$nub$concatMap除数$map读取$permutations$show n
其中除数n=过滤器((==0)。型号n)[1..n]
a193459_list=映射a193459[1..]
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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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