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

Terms

a(0) =5a(1) =14a(2) =33a(3) =80a(4) =193a(5) =466a(6) =1125a(7) =2716a(8) =6557a(9) =15830a(10) =38217a(11) =92264a(12) =222745a(13) =537754a(14) =1298253a(15) =3134260a(16) =7566773a(17) =18267806a(18) =44102385a(19) =106472576a(20) =257047537a(21) =620567650a(22) =1498182837a(23) =3616933324a(24) =8732049485a(25) =21081032294a(26) =50894114073