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

Terms

a(0) =0a(1) =0a(2) =1a(3) =3a(4) =6a(5) =10a(6) =15a(7) =21a(8) =29a(9) =45a(10) =90a(11) =220a(12) =561a(13) =1365a(14) =3095a(15) =6555a(16) =13110a(17) =25126a(18) =46971a(19) =87381a(20) =164921a(21) =320001a(22) =640002a(23) =1309528a(24) =2707629a(25) =5592405a(26) =11450531a(27) =23166783a(28) =46333566a(29) =91869970