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1, 2, 2, 3, 3, 6, 4, 4, 8, 8, 5, 5, 10, 10, 20, 6, 6, 12, 12, 24, 12, 7, 7, 14, 14, 28, 14, 42, 8, 8, 16, 16, 32, 16, 48, 32, 9, 9, 18, 18, 36, 18, 54, 36, 54, 10, 10, 20, 20, 40, 20, 60, 40, 60, 40, 11, 11, 22, 22, 44, 22, 66, 44, 66, 44, 110
(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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1,2
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评论
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行总和=A143270型: (1, 4, 12, 24, 50, 72, 126, 176,...).
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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=
1;
2, 2;
3, 3, 6;
4, 4, 8, 8;
5, 5, 10, 10, 20;
6, 6, 12, 12, 24, 12;
7, 7, 14, 1428, 14, 42;
...
第5行=(5、5、10、10、20)=(5*1、5*1,5*2、5*2,5*4);其中φ(k)=(1,1,2,2,4,…)。
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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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