Expansion of x^4*(2-12*x+24*x^2-8*x^3-41*x^4+57*x^5-16*x^6)/((1-x)*(1-3*x+x^2)*(1-2*x)^6).

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =2a(5) =20a(6) =120a(7) =570a(8) =2355a(9) =8841a(10) =30906a(11) =102187a(12) =323053a(13) =984354a(14) =2908671a(15) =8375521a(16) =23594410a(17) =65237027a(18) =177520325a(19) =476515378a(20) =1264297431a(21) =3321423193a(22) =8653113914a(23) =22386784603a(24) =57586262493a(25) =147447786562a(26) =376173191919a(27) =957113924753