G.f. A(x) satisfies A(x) = 1/(1 - x - x^6*A'''''(x)).

A386451

G.f. A(x) satisfies A(x) = 1/(1 - x - x^6*A'''''(x)).

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =121a(7) =87361a(8) =220324321

External references