Expansion of x/(1-5*x+7*x^2-5*x^3+x^4).

Terms

a(0) =0a(1) =1a(2) =5a(3) =18a(4) =60a(5) =198a(6) =655a(7) =2171a(8) =7200a(9) =23880a(10) =79200a(11) =262669a(12) =871145a(13) =2889162a(14) =9581940a(15) =31778622a(16) =105394195a(17) =349541159a(18) =1159257600a(19) =3844692240a(20) =12750969600a(21) =42288749161a(22) =140251162205a(23) =465144722658