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

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =4a(5) =11a(6) =22a(7) =37a(8) =61a(9) =114a(10) =232a(11) =467a(12) =894a(13) =1660a(14) =3096a(15) =5893a(16) =11351a(17) =21803a(18) =41535a(19) =78778a(20) =149615a(21) =285100a(22) =544165a(23) =1037963a(24) =1977196a(25) =3764056a(26) =7167911a(27) =13657244a(28) =26027280a(29) =49594720