G.f. satisfies: A(x) = 1 + ( x/A(x) )/A( x/A(x) ).

Terms

a(0) =1a(1) =1a(2) =-2a(3) =8a(4) =-42a(5) =258a(6) =-1764a(7) =13070a(8) =-103262a(9) =860812a(10) =-7516306a(11) =68380986a(12) =-645635800a(13) =6307334042a(14) =-63602862362a(15) =660771763808