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A091555 Partial sums of Mertens's function (A002321). +0
1
1, 1, 0, -1, -3, -4, -6, -8, -10, -11, -13, -15, -18, -20, -21, -22, -24, -26, -29, -32, -34, -35, -37, -39, -41, -42, -43, -44, -46, -49, -53, -57, -60, -62, -63, -64, -66, -67, -67, -67, -68, -70, -73, -76, -79, -81, -84, -87, -90, -93, -95, -97, -100, -103, -105, -107 (list; graph; listen)
OFFSET

1,5

FORMULA

a(n) = Sum(mu(k)*(n-k+1): 1<=k<=n), where mu=A008683, the Moebius function. - Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Nov 06 2006

CROSSREFS

Cf. A002321.

Sequence in context: A003257 A047298 A024672 this_sequence A024665 A027669 A027696

Adjacent sequences: A091552 A091553 A091554 this_sequence A091556 A091557 A091558

KEYWORD

sign

AUTHOR

Jon Perry (perry(AT)globalnet.co.uk), Mar 04 2004

EXTENSIONS

More terms from Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Nov 06 2006

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Last modified September 5 19:27 EDT 2008. Contains 143485 sequences.


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