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%I #9 Mar 14 2015 03:44:21
%S -1,-1,0,1,0,-1,0,1,0,-1,1,0,-1,-1,0,0,0,1,0,1,0,0,-1,0,0,1,-1,1,0,-1,
%T 0,-1,1,0,-1,0,1,1,1,1,0,0,0,1,0,-1,0,-1,1,1,0,0,-1,0,1,0,1,0,-1,0,1,
%U 0,-1,-1,-1,0,-1,0,0,1,-1,0,-1,0,-1,0,0,0,0,1,0,0,-1,0,-1,0,0,0,-1,-1,0,1,0,0,-1,1,-1
%N Moebius's mu of numbers which can be written as sum of a positive square and a positive cube.
%C a(n) = A008683(A055394(n)).
%Y Cf. A078386.
%K sign
%O 1,1
%A _Reinhard Zumkeller_, Nov 25 2002