%I #12 Oct 07 2017 07:29:47
%S -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,
%T 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,
%U -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
%N First differences of A008683.
%C Average value is 0, in the sense that lim (a(1)+a(2)+...+a(n))/n = 0. - _Charles R Greathouse IV_, Jan 24 2013
%H Antti Karttunen, <a href="/A127440/b127440.txt">Table of n, a(n) for n = 1..20000</a>
%t Array[MoebiusMu, 77] // Differences (* _Jean-François Alcover_, Jan 24 2013 *)
%o (PARI) a(n)=moebius(n+1)-moebius(n) \\ _Charles R Greathouse IV_, Jan 24 2013
%Y Cf. A008683.
%K sign
%O 1,1
%A _Gary W. Adamson_, Jan 14 2007
%E More terms from _Antti Karttunen_, Oct 07 2017