Expansion of (1-x^2) / (1-2*x-5*x^2+2*x^3).

Terms

a(0) =1a(1) =2a(2) =8a(3) =24a(4) =84a(5) =272a(6) =916a(7) =3024a(8) =10084a(9) =33456a(10) =111284a(11) =369680a(12) =1228868a(13) =4083568a(14) =13572116a(15) =45104336a(16) =149902116a(17) =498181680a(18) =1655665268a(19) =5502434704a(20) =18286832388a(21) =60774507760a(22) =201978308052a(23) =671255490128