Expansion of (1-4x+4*x^2)/((1-5x+5*x^2)*(1-3x+x^2)).

Terms

a(0) =1a(1) =4a(2) =15a(3) =56a(4) =208a(5) =768a(6) =2821a(7) =10320a(8) =37639a(9) =136972a(10) =497652a(11) =1805984a(12) =6548425a(13) =23729916a(14) =85953823a(15) =311240928a(16) =1126753336a(17) =4078394080a(18) =14760382029a(19) =53415642632a(20) =193291233367a(21) =699417041844