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

Terms

a(0) =1a(1) =1a(2) =2a(3) =6a(4) =18a(5) =56a(6) =184a(7) =624a(8) =2161a(9) =7621a(10) =27283a(11) =98869a(12) =361967a(13) =1336843a(14) =4974763a(15) =18634683a(16) =70207751a(17) =265874119a(18) =1011475368a(19) =3863846328a(20) =14814818017a(21) =56994831109a(22) =219941836172a(23) =851138940402