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

Terms

a(0) =1a(1) =9a(2) =49a(3) =209a(4) =769a(5) =2561a(6) =7937a(7) =23297a(8) =65537a(9) =178177a(10) =471041a(11) =1216513a(12) =3080193a(13) =7667713a(14) =18808833a(15) =45547521a(16) =109051905a(17) =258473985a(18) =607125505a(19) =1414529025a(20) =3271557121a(21) =7516192769a(22) =17163091969