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Jacobi symbol(sigma(2n+1),2n+1).
0

%I #2 Feb 11 2014 19:05:32

%S 1,1,1,1,1,1,1,0,1,1,-1,1,1,1,1,1,0,1,1,-1,1,1,0,1,1,0,1,1,-1,1,1,-1,

%T -1,1,0,1,1,1,1,1,1,1,1,0,1,0,-1,0,1,0,1,1,0,1,1,-1,1,1,0,1,1,0,1,1,

%U -1,1,1,0,1,1,0,1,0,0,1,1,0,1,1,0,-1,1,0,1,1,-1,1,-1,0,1,1,-1,1,1,1,1,1,0,1,1

%N Jacobi symbol(sigma(2n+1),2n+1).

%C Jacobi symbol(n,m) is defined only for (positive) odd numbers m.

%t Table[JacobiSymbol[DivisorSigma[1, 2 j + 1], 2 j + 1], {j, 0, 99}]

%K sign

%O 0,1

%A _Joseph L. Pe_, Nov 28 2002