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

Terms

a(0) =1a(1) =1a(2) =3a(3) =7a(4) =19a(5) =49a(6) =131a(7) =343a(8) =911a(9) =2397a(10) =6347a(11) =16735a(12) =44251a(13) =116785a(14) =308611a(15) =814815a(16) =2152583a(17) =5684477a(18) =15015355a(19) =39655527a(20) =104742659a(21) =276635985a(22) =730663043a(23) =1929789255a(24) =5096983167a(25) =13461994429a(26) =35555794923a(27) =93909205391a(28) =248032219243a(29) =655098462417