Expansion of (1+3*x+9*x^2+9*x^3+9*x^4+3*x^5+x^6) /( (1+x)^2 * (1-x)^5 ).

Terms

a(0) =1a(1) =6a(2) =26a(3) =76a(4) =186a(5) =386a(6) =726a(7) =1251a(8) =2031a(9) =3126a(10) =4626a(11) =6606a(12) =9176a(13) =12426a(14) =16486a(15) =21461a(16) =27501a(17) =34726a(18) =43306a(19) =53376a(20) =65126a(21) =78706a(22) =94326a(23) =112151a(24) =132411a(25) =155286a(26) =181026a(27) =209826a(28) =241956a(29) =277626