Expansion of (1 - x + x^4)/((1 - x + x^4)^2 + 4*x^5).

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =0a(5) =-5a(6) =-14a(7) =-27a(8) =-43a(9) =-50a(10) =-20a(11) =91a(12) =342a(13) =784a(14) =1380a(15) =1861a(16) =1519a(17) =-1025a(18) =-7877a(19) =-21302a(20) =-41829a(21) =-64128a(22) =-70003a(23) =-19381a(24) =155984a(25) =544288a(26) =1208731a(27) =2073244a(28) =2706380a(29) =2003100