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

Terms

a(0) =1a(1) =0a(2) =1a(3) =-2a(4) =3a(5) =-4a(6) =9a(7) =-14a(8) =23a(9) =-40a(10) =69a(11) =-114a(12) =195a(13) =-332a(14) =561a(15) =-950a(16) =1615a(17) =-2736a(18) =4637a(19) =-7866a(20) =13339a(21) =-22612a(22) =38345a(23) =-65022a(24) =110247a(25) =-186936a(26) =316981a(27) =-537474a(28) =911347a(29) =-1545308