搜索: a263259-编号:a263295
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配方奶粉
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黄体脂酮素
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(方案)
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交叉参考
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链接
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配方奶粉
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黄体脂酮素
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(方案)
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交叉参考
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非n
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经核准的
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当从k=n开始并重复应用用k-d(k)替换k的映射时,达到零所需的步长数,其中d(k)是k的除数(A000005号).
原来的名字是:a(n)=1+a(n-sigma_0(n)),a(0)=0,sigma_0(n)n的除数。
(结束)
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链接
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配方奶粉
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其他身份。对于所有n>=0:
(结束)
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MAPLE公司
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使用(数字理论):a:=proc(n)如果n=0,则0,否则1+a(n-tau(n))end如果end proc:seq(a(n),n=0。。90); #Emeric Deutsch公司2009年1月26日
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数学
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a[0]=0;a[n]:=a[n]=1+a[n-除数西格玛[0,n]];表[a@n,{n,0,82}](*迈克尔·德弗利格2015年9月24日*)
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黄体脂酮素
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(PARI)
v155043=矢量(uplim);
v155043[1]=1;v155043[2]=1;
对于(i=3,uplim,v155043[i]=1+v155043[i-numdiv(i)]);
对于(n=0,uplim,写入(“b155043.txt”,n,“”,A155043号(n) );
(哈斯克尔)
导入数据。列表(genericIndex)
a155043 n=通用索引a155043_list n
a155043_list=0:映射((+1)。a155043)a049820_列表
(Python)
从sympy导入divisor_count作为d
定义a(n):如果n==0,则返回0,否则返回1+a(n-d(n))
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扩展
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0, 1, 2, 3, 4, 6, 5, 8, 9, 10, 12, 7, 11, 14, 18, 13, 15, 16, 20, 22, 17, 24, 25, 26, 28, 30, 19, 21, 32, 34, 23, 38, 40, 42, 27, 44, 46, 48, 29, 36, 49, 50, 52, 54, 56, 60, 31, 33, 58, 72, 35, 62, 66, 84, 37, 39, 68, 70, 96, 41, 45, 74, 76, 78, 80, 104, 108, 43, 47, 81, 82, 88, 90, 120, 51, 83, 85, 86, 94, 128, 132, 53, 55, 87, 92, 102, 136, 140
(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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0,3
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链接
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配方奶粉
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其他身份。对于所有n>=0:
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例子
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三角形的第0-8行:
0;
1, 2;
3, 4, 6;
5, 8, 9, 10, 12;
7, 11, 14, 18;
13, 15, 16, 20, 22;
17, 24, 25, 26, 28, 30;
19, 21, 32, 34;
23, 38, 40, 42;
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黄体脂酮素
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交叉参考
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关键字
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非n,标签
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经核准的
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链接
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黄体脂酮素
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交叉参考
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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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