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A167754号
a(1)=1,则a(n)=(-1)*和{k=1..n-1}(-1)^a(k)*楼层(n/k)。
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1,2
黄体脂酮素
(PARI)
N=100;a=矢量(N);
an[1]=1;对于(n=2,n,an[n]=-和(k=1,n-1,(-1)^an[k]*楼层(n/k));
一个
关键词
非n
作者
状态
经核准的