G.f. satisfies: A(x) = (1 - x) * Product_{k>0} A(x^(2*k)) / Product_{k>1} A(x^(2*k-1)).

Terms

a(0) =1a(1) =-1a(2) =-1a(3) =2a(4) =-3a(5) =2a(6) =4a(7) =-6a(8) =-2a(9) =5a(10) =0a(11) =-3a(12) =15a(13) =-13a(14) =-19a(15) =27a(16) =-14a(17) =4a(18) =25a(19) =-33a(20) =-3a(21) =7a(22) =6a(23) =15a(24) =33a(25) =-48a(26) =-58a(27) =69a(28) =-94a(29) =119