%I

%S 1,-3,-6,0,-15,21,-28,0,0,55

%N mu(n) * A000217(n).

%C Row sums of A127510.

%e a(n) = -15 = (-1) * 15, since mu(5) = -1 and T(5) = 15.

%Y Cf. A008683, A000217, A127510.

%K sign,easy

%O 1,2

%A _Gary W. Adamson_, Jan 17 2007