|
%I #6 Sep 08 2013 18:32:40
%S 1,-1,-2,-1,-2,-3,0,0,0,0,-1,-2,-3,-4,-5,1,2,3,4,5,6,-1,-2,-3,-4,-5,
%T -6,-7,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,2,3,4,5,6,7,8,9,10
%N Triangle T(n,k) = k*mobius(n).
%F T(n,k) = A008683(n)*k.
%e First few rows of the triangle are:
%e 1;
%e -1, -2;
%e -1, -2, -3;
%e 0, 0, 0, 0;
%e -1, -2, -3, -4, -5;
%e 1, 2, 3, 4, 5, 6;
%e ...
%p A127510 := proc(n,k)
%p numtheory[mobius](n)*k ;
%p end proc: # _R. J. Mathar_, Sep 08 2013
%Y Cf. A008683, A000217, A125287 (row sums).
%K tabl,easy,sign
%O 1,3
%A _Gary W. Adamson_, Jan 17 2007
|
