Expansion of (1/x) * Series_Reversion( x * (1-x^2/(1-x))^3 ).

Terms

a(0) =1a(1) =0a(2) =3a(3) =3a(4) =27a(5) =60a(6) =355a(7) =1128a(8) =5694a(9) =21610a(10) =102462a(11) =426465a(12) =1978547a(13) =8659386a(14) =40003167a(15) =180241995a(16) =834994605a(17) =3830870574a(18) =17841265598a(19) =82854767805a(20) =388124777739