Expansion of 1/(1 - 2*x - 3*x^2)^(5/2).

Terms

a(0) =1a(1) =5a(2) =25a(3) =105a(4) =420a(5) =1596a(6) =5880a(7) =21120a(8) =74415a(9) =258115a(10) =883883a(11) =2994355a(12) =10051860a(13) =33479460a(14) =110750580a(15) =364177332a(16) =1191186855a(17) =3877914915a(18) =12571302975a(19) =40598200335a(20) =130657125984a(21) =419173385400