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Search: id:A084237
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| A084237 |
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a(n) = M(10^n), where M(n) is Mertens's function. |
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+0
3
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| 1, -1, 1, 2, -23, -48, 212, 1037, 1928, -222, -33722, -87856, 62366, 599582, -875575, -3216373, -3195437
(list; graph; listen)
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OFFSET
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0,4
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LINKS
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Eric Weisstein's World of Mathematics, Mertens Function
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FORMULA
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Mertens's function: Sum_{1<=k<=n} mu(k), where mu = Moebius function (A008683).
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MATHEMATICA
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s = 0; i = 1; Do[ While[i <= 10^n, s = s + MoebiusMu[i]; i++ ]; Print[s], {n, 0, 50}]
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CROSSREFS
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Cf. A002321.
Sequence in context: A049592 A057621 A074809 this_sequence A106928 A070934 A031915
Adjacent sequences: A084234 A084235 A084236 this_sequence A084238 A084239 A084240
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KEYWORD
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sign
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AUTHOR
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Robert G. Wilson v (rgwv(AT)rgwv.com), May 15 2003
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EXTENSIONS
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More terms from Eric Weisstein (eric(AT)weisstein.com), Jun 27, 2003
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