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Moebius's mu of numbers which can be written as sum of a positive square and a positive cube.
1

%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