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A127440 First differences of A008683. 2
-2, 0, 1, -1, 2, -2, 1, 0, 1, -2, 1, -1, 2, 0, -1, -1, 1, -1, 1, 1, 0, -2, 1, 0, 1, -1, 0, -1, 0, 0, 1, 1, 0, 0, -1, -1, 2, 0, -1, -1, 0, 0, 1, 0, 1, -2, 1, 0, 0, 1, -1, -1, 1, 1, -1, 1, 0, -2, 1, -1, 2, -1, 0, 1, -2, 0, 1, 1, -2, 0, 1, -1, 2, -1, 0, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Average value is 0, in the sense that lim (a(1)+a(2)+...+a(n))/n = 0. - Charles R Greathouse IV, Jan 24 2013

LINKS

Table of n, a(n) for n=1..76.

MATHEMATICA

Array[MoebiusMu, 77] // Differences (* Jean-Fran├žois Alcover, Jan 24 2013 *)

PROG

(PARI) a(n)=moebius(n+1)-moebius(n) \\ Charles R Greathouse IV, Jan 24 2013

CROSSREFS

Cf. A008683.

Sequence in context: A236532 A077763 A030218 * A118198 A059881 A096568

Adjacent sequences:  A127437 A127438 A127439 * A127441 A127442 A127443

KEYWORD

sign

AUTHOR

Gary W. Adamson, Jan 14 2007

STATUS

approved

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Last modified November 26 05:57 EST 2014. Contains 250020 sequences.