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Search: id:A062984
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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
(list; graph; listen)
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OFFSET
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1,6
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LINKS
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Harry J. Smith, Table of n, a(n) for n=1,...,2000
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PROGRAM
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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) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Aug 15 2009]
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CROSSREFS
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Cf. A002321, A048050.
Sequence in context: A077614 A116948 A101660 this_sequence A105243 A140081 A112345
Adjacent sequences: A062981 A062982 A062983 this_sequence A062985 A062986 A062987
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KEYWORD
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easy,sign
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AUTHOR
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Jason Earls (zevi_35711(AT)yahoo.com), Jul 25 2001
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