G.f. A(x) satisfies A(x) = 1/(1 - x*A(x) - x^5*A''''(x)).

A385764

G.f. A(x) satisfies A(x) = 1/(1 - x*A(x) - x^5*A''''(x)).

Terms

    a(0) =1a(1) =1a(2) =2a(3) =5a(4) =14a(5) =378a(6) =46500a(7) =16879869a(8) =14229776750

External references