Expansion of e.g.f. -log(1-x)/(1-x^2).

Terms

a(0) =0a(1) =1a(2) =1a(3) =8a(4) =18a(5) =184a(6) =660a(7) =8448a(8) =42000a(9) =648576a(10) =4142880a(11) =74972160a(12) =586776960a(13) =12174658560a(14) =113020427520