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1, 3, 3, 7, 3, 7, 7, 15, 3, 7, 7, 15, 7, 15, 15, 31, 3, 7, 7, 15, 7, 15, 15, 31, 7, 15, 15, 31, 15, 31, 31, 63, 3, 7, 7, 15, 7, 15, 15, 31, 7, 15, 15, 31, 15, 31, 31, 63, 7, 15, 15, 31, 15, 31, 31, 63, 15, 31, 31, 63, 31, 63, 63, 127, 3, 7, 7, 15, 7, 15, 15, 31, 7, 15, 15, 31, 15, 31, 31
(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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0,2
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评论
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链接
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配方奶粉
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a(n)=n-和{k=0..n}(-1)^二项式(n,k)-彼得·卢什尼2018年1月14日
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例子
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数字n转换为二进制,“0”由“.”表示,以便更好地显示1,将1相加并计算序列:
n二进制总计a(n)
0 -> . -> 0,因此2^(0+1)-1=2-1=1
1 -> 1 -> 1, " 2^(1+1)-1 = 4-1 = 3
2 -> 1. -> 1, " 2^(1+1)-1 = 4-1 = 3
3 -> 11 -> 2, " 2^(2+1)-1 = 8-1 = 7
4 -> 1.. -> 1, " 2^(1+1)-1 = 4-1 = 3
5 -> 1.1 -> 2, " 2^(2+1)-1 = 8-1 = 7
6->11.->2, " 2^(2+1)-1 = 8-1 = 7
7 -> 111 -> 3, " 2^(3+1)-1 = 16-1 = 15
8->1…->1,“2^(1+1)-1=4-1=3
9 -> 1..1 -> 2, " 2^(2+1)-1 = 8-1 = 7
10-> 1.1. -> 2,“2^(2+1)-1=8-1=7
(结束)
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数学
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表[2^(数字计数[n,2][[1]]+1)-1,{n,0,78}](*或*)
表[2^(总计@整数位数[n,2]+1)-1,{n,0,78}](*迈克尔·德弗利格2016年1月25日*)
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黄体脂酮素
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(Python 3.10+)
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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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经核准的
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