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A100198 Let f(0) = -1, f(n) = Moebius(n) = A008683(n) for n>0. Sequence gives partial sums a(n) = Sum_{ 0 <= i <= n} f(i). +0
1
-1, 0, -1, -2, -2, -3, -2, -3, -3, -3, -2, -3, -3, -4, -3, -2, -2, -3, -3, -4, -4, -3, -2, -3, -3, -3, -2, -2, -2, -3, -4, -5, -5, -4, -3, -2, -2, -3, -2, -1, -1, -2, -3, -4, -4, -4, -3, -4, -4, -4, -4, -3, -3, -4, -4, -3, -3, -2, -1, -2, -2, -3, -2, -2, -2, -1, -2, -3, -3, -2, -3, -4, -4, -5, -4, -4, -4, -3, -4, -5, -5, -5, -4, -5, -5, -4, -3, -2, -2, -3, -3, -2, -2, -1, 0, 1, 1, 0, 0, 0, 0, -1, -2, -3, -3 (list; graph; listen)
OFFSET

0,4

MAPLE

seq(abs(sum(mobius(x), x=0..a)), a=0..100);

CROSSREFS

See A002321 for a better version.

Sequence in context: A107573 A081308 A070210 this_sequence A164996 A136510 A080071

Adjacent sequences: A100195 A100196 A100197 this_sequence A100199 A100200 A100201

KEYWORD

sign

AUTHOR

Jorge Coveiro (jorgecoveiro(AT)yahoo.com), Dec 27 2004

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Last modified December 9 18:50 EST 2009. Contains 170568 sequences.


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