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

Terms

a(0) =0a(1) =1a(2) =3a(3) =10a(4) =21a(5) =46a(6) =93a(7) =190a(8) =381a(9) =766a(10) =1533a(11) =3070a(12) =6141a(13) =12286a(14) =24573a(15) =49150a(16) =98301a(17) =196606a(18) =393213a(19) =786430a(20) =1572861a(21) =3145726a(22) =6291453a(23) =12582910a(24) =25165821a(25) =50331646a(26) =100663293a(27) =201326590a(28) =402653181a(29) =805306366