E.g.f. satisfies: A(x+1/2*x^2)=x*exp(A(x)).

Terms

a(0) =1a(1) =1a(2) =3a(3) =7a(4) =30a(5) =96a(6) =343a(7) =4117a(8) =-7200a(9) =-117350a(10) =13210791a(11) =-301763373a(12) =352971853a(13) =347188696141