Expansion of Im(x/(1 - x - 2*i*x^2)), i=sqrt(-1).

Terms

a(0) =0a(1) =0a(2) =0a(3) =2a(4) =4a(5) =6a(6) =8a(7) =2a(8) =-20a(9) =-66a(10) =-144a(11) =-230a(12) =-236a(13) =22a(14) =856a(15) =2610a(16) =5308a(17) =7918a(18) =7104a(19) =-4150a(20) =-36636a(21) =-100794a(22) =-193368a(23) =-269342a(24) =-198772a(25) =274974a(26) =1522192a(27) =3846778a(28) =6966452a(29) =8986230