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

Terms

a(0) =1a(1) =2a(2) =5a(3) =15a(4) =50a(5) =177a(6) =652a(7) =2473a(8) =9594a(9) =37892a(10) =151846a(11) =615859a(12) =2523217a(13) =10427471a(14) =43415259a(15) =181941198a(16) =766841846a(17) =3248517320a(18) =13823977350a(19) =59067577266a(20) =253315964424