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A062984
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a(n) = M(C(n)), where M(n) is Mertens's function (A002321) and C(n) is Chowla's function (A048050).
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1
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0, 0, 0, 0, 0, -2, 0, -1, -1, -2, 0, -1, 0, -2, -2, -2, 0, -3, 0, -2, -1, -3, 0, -1, -2, -1, -2, -1, 0, -1, 0, -3, -2, -3, -2, -3, 0, -2, -1, -3, 0, -3, 0, 0, -4, -2, 0, -3, -2, -2, -3, -3, 0, 0, -1, -1, -1, -4, 0, -3, 0, -3, 0, -1, -2, -2, 0, -1, -1, -4, 0, -2, 0, 0, -3, -1, -2, -2, 0, -3, 0, -3, 0, -4, -1, -3, -4, -1, 0, -1, -3, -3, -2, -3
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OFFSET
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1,6
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LINKS
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PROG
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(PARI) M(n)=sum(k=1, n, moebius(k));
C(n)=sigma(n)-n-1;
j=[]; for(n=1, 350, j=concat(j, M(C(n)))); j
(PARI) { for (n=1, 2000, a=sum(k=1, sigma(n) - n - 1, moebius(k)); write("b062984.txt", n, " ", a) ) } \\ Harry J. Smith, Aug 15 2009
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CROSSREFS
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KEYWORD
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easy,sign,changed
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AUTHOR
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STATUS
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approved
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