Expansion of 1/((1+x)*(1-x)^11).

Terms

a(0) =1a(1) =10a(2) =56a(3) =230a(4) =771a(5) =2232a(6) =5776a(7) =13672a(8) =30086a(9) =62292a(10) =122464a(11) =230252a(12) =416394a(13) =727672a(14) =1233584a(15) =2035176a(16) =3276559a(17) =5159726a(18) =7963384a(19) =12066626a(20) =17978389a(21) =26373776a(22) =38138464a(23) =54422576a(24) =76705564a(25) =106873832a(26) =147313024a(27) =201017112a(28) =271716644a(29) =364028752