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

Terms

a(0) =1a(1) =3a(2) =10a(3) =34a(4) =117a(5) =407a(6) =1429a(7) =5055a(8) =17986a(9) =64278a(10) =230473a(11) =828391a(12) =2982825a(13) =10754459a(14) =38811802a(15) =140165322a(16) =506449789a(17) =1830590295a(18) =6618524221a(19) =23933966743a(20) =86562282258a(21) =313102489406