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

Terms

a(0) =0a(1) =1a(2) =-1a(3) =2a(4) =4a(5) =21a(6) =75a(7) =286a(8) =1064a(9) =3977a(10) =14839a(11) =55386a(12) =206700a(13) =771421a(14) =2878979a(15) =10744502a(16) =40099024a(17) =149651601a(18) =558507375a(19) =2084377906a(20) =7779004244a(21) =29031639077a(22) =108347552059a(23) =404358569166