Expansion of 1/(Sum_{i>=0} q^(2*i*(i+1))/Product_{j=0..i} (1 + q^(2*j+1) + q^(4*j+2))).

Terms

a(0) =1a(1) =1a(2) =1a(3) =0a(4) =-1a(5) =-1a(6) =-1a(7) =1a(8) =2a(9) =2a(10) =1a(11) =-2a(12) =-4a(13) =-5a(14) =-2a(15) =4a(16) =9a(17) =11a(18) =4a(19) =-8a(20) =-20a(21) =-22a(22) =-7a(23) =18a(24) =42a(25) =43a(26) =12a(27) =-42a(28) =-89a(29) =-87