Revert transform of (1 + 3x - x^3)/(1 + 4x + 4x^2 + 2x^3).

Terms

a(0) =1a(1) =1a(2) =2a(3) =4a(4) =10a(5) =24a(6) =66a(7) =173a(8) =498a(9) =1378a(10) =4070a(11) =11680a(12) =35078a(13) =103292a(14) =313980a(15) =942133a(16) =2890878a(17) =8798182a(18) =27204516a(19) =83704806a(20) =260493354a(21) =808445448a(22) =2529836520a(23) =7906101138a(24) =24858833998a(25) =78131339008a(26) =246694899708a(27) =779057755912