G.f. A(x) satisfies A(x) = 1/( 1 - x*(A(x) + A(2*x)) ).

A385617

G.f. A(x) satisfies A(x) = 1/( 1 - x*(A(x) + A(2*x)) ).

Terms

    a(0) =1a(1) =2a(2) =10a(3) =82a(4) =1062a(5) =22646a(6) =846570a(7) =58644858a(8) =7808479582

External references