A089814 Expansion of Product[(1-q^(10k-5))^2,{k,Infinity}].

1, 0, 0, 0, 0, -2, 0, 0, 0, 0, 1, 0, 0, 0, 0, -2, 0, 0, 0, 0, 4, 0, 0, 0, 0, -4, 0, 0, 0, 0, 5, 0, 0, 0, 0, -6, 0, 0, 0, 0, 9, 0, 0, 0, 0, -12, 0, 0, 0, 0, 13, 0, 0, 0, 0, -16, 0, 0, 0, 0, 21, 0, 0, 0, 0, -26, 0, 0, 0, 0, 29, 0, 0, 0, 0, -36, 0, 0, 0, 0, 46, 0, 0, 0, 0, -54, 0, 0, 0, 0, 62, 0, 0, 0, 0, -74, 0