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

Terms

a(0) =1a(1) =3a(2) =5a(3) =13a(4) =30a(5) =69a(6) =160a(7) =371a(8) =859a(9) =1990a(10) =4610a(11) =10679a(12) =24738a(13) =57306a(14) =132750a(15) =307517a(16) =712367a(17) =1650207a(18) =3822725a(19) =8855390a(20) =20513621a(21) =47520058a(22) =110080805a(23) =255003553a(24) =590718900a(25) =1368407674a(26) =3169933385a(27) =7343190086a(28) =17010591104a(29) =39405245720