G.f.: A(x) = F(x*G(x)^2) where F(x) = G(x*F(x)) = 1 + x*F(x)^3 is the g.f. of A001764 and G(x) = F(x/G(x)) = 1 + x*G(x)^2 is the g.f. of A000108 (Catalan).

A153391

G.f.: A(x) = F(x*G(x)^2) where F(x) = G(x*F(x)) = 1 + x*F(x)^3 is the g.f. of A001764 and G(x) = F(x/G(x)) = 1 + x*G(x)^2 is the g.f. of A000108 (Catalan).

Terms

    a(0) =1a(1) =1a(2) =5a(3) =29a(4) =183a(5) =1223a(6) =8525a(7) =61366a(8) =453003a(9) =3412077a(10) =26124599a(11) =202748728a(12) =1591450129a(13) =12612760009a(14) =100790253764a(15) =811227147197

External references