Expansion of (1/x) * Series_Reversion( x / (1 + x^2 / (1 - x)^2) ).

Terms

a(0) =1a(1) =0a(2) =1a(3) =2a(4) =5a(5) =14a(6) =40a(7) =118a(8) =357a(9) =1100a(10) =3441a(11) =10900a(12) =34892a(13) =112696a(14) =366808a(15) =1201942a(16) =3961765a(17) =13126872a(18) =43697395a(19) =146070954a(20) =490127325a(21) =1650206070a(22) =5573390956a(23) =18877202872a(24) =64104934380a(25) =218218591344a(26) =744490926700