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Triangle read by rows, T(n,k). If k divides n then A008683(n)*A008683(k).
3

%I #4 Mar 30 2012 18:53:09

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

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

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

%N Triangle read by rows, T(n,k). If k divides n then A008683(n)*A008683(k).

%C A008683 is found in the first column. A087003 appears in the second column.

%C The definition does not match the values for n=k. Apparently T(n,n) has been set to 1, not mu(n)*mu(n). [From _R. J. Mathar_, Mar 14 2009]

%K sign,tabl

%O 1,1

%A _Mats Granvik_, Feb 07 2009