A161520 Expansion of Sum_{n >= 1} q^n(1-q)(1-q^2)...(1-q^(2n-1))/((1+q^2)(1+q^4)...(1+q^(2n))).

1, 0, -1, -1, 0, 0, 0, 0, 1, 2, 0, -1, 0, 0, 0, -1, 0, 0, -2, 0, 0, 0, 0, 0, 3, 0, -1, 0, 0, 2, 0, 0, 0, 0, 0, -1, 0, 0, 0, -2, 0, 0, -2, 0, 0, 2, 0, -1, 1, 0, 0, 0, 0, 0, 0, 0, 2, 2, 0, 0, 0, 0, 0, -1, 0, 0, -2, 0, 0, 0, 0, 0, 2, 0, -3, -2, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 2, 0, 0, 2, 0, 0