Expansion of (1-x-2*x^2)/(1-2*x-3*x^2-4*x^3+4*x^4).

Terms

a(0) =1a(1) =1a(2) =3a(3) =13a(4) =35a(5) =117a(6) =379a(7) =1197a(8) =3859a(9) =12357a(10) =39563a(11) =126845a(12) =406371a(13) =1302101a(14) =4172443a(15) =13369293a(16) =42838835a(17) =137266917a(18) =439837739a(19) =1409354397a(20) =4515934339a(21) =14470215157a(22) =46366299963a(23) =148569565165a(24) =476055153491