Recip transform of 2*(1 + x^3 + x^4 + x^5)-1/(1-x).

Terms

a(0) =1a(1) =1a(2) =3a(3) =9a(4) =31a(5) =111a(6) =415a(7) =1591a(8) =6229a(9) =24773a(10) =99795a(11) =406225a(12) =1668071a(13) =6900295a(14) =28725759a(15) =120243143a(16) =505751889a(17) =2136282633a(18) =9057752963a(19) =38534668209a(20) =164439768551a(21) =703658271103