Expansion of Sum_{k>=0} x^k/(1 + k^2 * x).

Terms

a(0) =1a(1) =1a(2) =0a(3) =-2a(4) =7a(5) =3a(6) =-242a(7) =2032a(8) =-3795a(9) =-187211a(10) =3860140a(11) =-36467310a(12) =-284357501a(13) =21796446487a(14) =-538332144294