Expansion of Sum_{n>=0} x^(n^2-n) / (1 + x^n)^n.

Terms

a(0) =1a(1) =-1a(2) =2a(3) =-1a(4) =-1a(5) =-1a(6) =5a(7) =-1a(8) =-3a(9) =-4a(10) =6a(11) =-1a(12) =2a(13) =-1a(14) =8a(15) =-11a(16) =-11a(17) =-1a(18) =25a(19) =-1a(20) =2a(21) =-22a(22) =12a(23) =-1a(24) =-3a(25) =-6a(26) =14a(27) =-37a(28) =22a(29) =-1