E.g.f. satisfies: A(x)^A(x) = 1/(1 - x).

Terms

a(0) =1a(1) =1a(2) =0a(3) =3a(4) =-8a(5) =100a(6) =-834a(7) =11438a(8) =-159928a(9) =2762352a(10) =-52322160a(11) =1124320032a(12) =-26509832040a(13) =686751503568