A127440 First differences of A008683.

-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, -2, 0, 1, 0, 1, -2, 1, 1, 0, 0, -1, -1, 1, 1, -1, 1, 0, 0, -1, -1, 1, 0, 0, -1, 0, 0, 1, -1, 2

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

Antti Karttunen, Table of n, a(n) for n = 1..20000

Mathematica

Array[MoebiusMu, 77] // Differences (* Jean-François 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: A077763 A030218 A281388 * A118198 A348691 A290885

Adjacent sequences: A127437 A127438 A127439 * A127441 A127442 A127443

Keyword

sign

Author

Gary W. Adamson, Jan 14 2007

Extensions

More terms from Antti Karttunen, Oct 07 2017

Status

approved