G.f. A(x) satisfies: A(x) = G(x*A(x)) where A(x/G(x)) = G(x) = g.f. of A006664, which is the number of irreducible systems of meanders.
A168344
G.f. A(x) satisfies: A(x) = G(x*A(x)) where A(x/G(x)) = G(x) = g.f. of A006664, which is the number of irreducible systems of meanders.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =15a(4) =99a(5) =773a(6) =6743a(7) =63591a(8) =635307a(9) =6634599a(10) =71759983a(11) =798563065a(12) =9098321475a(13) =105733563393
External references
- oeis: A168344