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

Terms

a(0) =1a(1) =2a(2) =5a(3) =12a(4) =25a(5) =54a(6) =113a(7) =232a(8) =477a(9) =970a(10) =1965a(11) =3972a(12) =8001a(13) =16094a(14) =32329a(15) =64864a(16) =130053a(17) =260594a(18) =521925a(19) =1044988a(20) =2091689a(21) =4185990a(22) =8375969a(23) =16757976a(24) =33525165a(25) =67064346a(26) =134149981a(27) =268332404a(28) =536714129a(29) =1073503278