Expansion of 420*x*(1 + x)*(1 + 10*x + x^2) / (1 - x)^6.

Terms

a(0) =420a(1) =7140a(2) =41160a(3) =148680a(4) =411180a(5) =955500a(6) =1963920a(7) =3684240a(8) =6439860a(9) =10639860a(10) =16789080a(11) =25498200a(12) =37493820a(13) =53628540a(14) =74891040a(15) =102416160a(16) =137494980a(17) =181584900a(18) =236319720a(19) =303519720a(20) =385201740a(21) =483589260a(22) =601122480a(23) =740468400a(24) =904530900a(25) =1096460820