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

Terms

a(0) =1a(1) =1a(2) =3a(3) =9a(4) =30a(5) =107a(6) =396a(7) =1513a(8) =5915a(9) =23554a(10) =95202a(11) =389555a(12) =1610588a(13) =6717816a(14) =28234064a(15) =119452553a(16) =508330809a(17) =2174393331a(18) =9343913933a(19) =40319400738a(20) =174630125428a(21) =758916134002