E.g.f.: 1 / (1 + log(1 - x - x^2)).

Terms

a(0) =1a(1) =1a(2) =5a(3) =32a(4) =292a(5) =3294a(6) =44918a(7) =714468a(8) =13002456a(9) =266275200a(10) =6060498672a(11) =151750887936