Expansion of e.g.f. (3+2*x)/(1-x^2).

Terms

a(0) =3a(1) =2a(2) =6a(3) =12a(4) =72a(5) =240a(6) =2160a(7) =10080a(8) =120960a(9) =725760a(10) =10886400a(11) =79833600a(12) =1437004800a(13) =12454041600a(14) =261534873600