Expansion of 1/(Sum_{i>=0} q^(i^2)/Product_{j=1..i} (1 - q^j + q^(2*j))).

Terms

a(0) =1a(1) =-1a(2) =0a(3) =1a(4) =-1a(5) =0a(6) =0a(7) =0a(8) =1a(9) =-2a(10) =2a(11) =0a(12) =-3a(13) =4a(14) =-3a(15) =1a(16) =1a(17) =-4a(18) =9a(19) =-10a(20) =2a(21) =11a(22) =-19a(23) =16a(24) =-7a(25) =-5a(26) =22a(27) =-40a(28) =43a(29) =-13