Expansion of 1/(1+2*x-x^2+2*x^3).

Terms

a(0) =1a(1) =-2a(2) =5a(3) =-14a(4) =37a(5) =-98a(6) =261a(7) =-694a(8) =1845a(9) =-4906a(10) =13045a(11) =-34686a(12) =92229a(13) =-245234a(14) =652069a(15) =-1733830a(16) =4610197a(17) =-12258362a(18) =32594581a(19) =-86667918a(20) =230447141a(21) =-612751362a(22) =1629285701a(23) =-4332217046a(24) =11519222517a(25) =-30629233482a(26) =81442123573a(27) =-216551925662a(28) =575804441861