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

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =3a(6) =11a(7) =11a(8) =41a(9) =41a(10) =153a(11) =153a(12) =571a(13) =571a(14) =2131a(15) =2131a(16) =7953a(17) =7953a(18) =29681a(19) =29681a(20) =110771a(21) =110771a(22) =413403a(23) =413403a(24) =1542841a(25) =1542841a(26) =5757961a(27) =5757961a(28) =21489003a(29) =21489003