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

Terms

a(0) =0a(1) =0a(2) =0a(3) =1a(4) =8a(5) =43a(6) =196a(7) =820a(8) =3264a(9) =12597a(10) =47652a(11) =177859a(12) =657800a(13) =2417416a(14) =8844448a(15) =32256553a(16) =117378336a(17) =426440955a(18) =1547491404a(19) =5610955132a(20) =20332248992a(21) =73645557469a(22) =266668876540a(23) =965384509651