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A372788飞机
a(n)=τ(8*n)=A000005号(8*n)。
10
4, 5, 8, 6, 8, 10, 8, 7, 12, 10, 8, 12, 8, 10, 16, 8, 8, 15, 8, 12, 16, 10, 8, 14, 12, 10, 16, 12, 8, 20, 8, 9, 16, 10, 16, 18, 8, 10, 16, 14, 8, 20, 8, 12, 24, 10, 8, 16, 12, 15, 16, 12, 8, 20, 16, 14, 16, 10, 8, 24, 8, 10, 24, 10, 16, 20, 8, 12, 16, 20, 8, 21
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1,1
链接
配方奶粉
求和{k=1..n}a(k)~(20*n*(log(n)+2*gamma-1)+n*12*log(2))/8,其中gamma是Euler-Marcheroni常数A001620号.
数学
表[DivisorSigma[0,8*n],{n,1,150}]
关键词
非n
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状态
经核准的