Expansion of Product_{k>=1} (1 - x^(2*k))^(2*k)/(1 - x^(2*k-1))^(2*k-1).

Terms

a(0) =1a(1) =1a(2) =-1a(3) =2a(4) =-1a(5) =-2a(6) =6a(7) =-6a(8) =3a(9) =-1a(10) =-1a(11) =9a(12) =-18a(13) =23a(14) =-27a(15) =23a(16) =-1a(17) =-24a(18) =49a(19) =-89a(20) =121a(21) =-117a(22) =96a(23) =-60a(24) =-18a(25) =138a(26) =-275a(27) =408a(28) =-525a(29) =592