10401712

Appears in sequences

• Number of irreducible chord diagrams with 2n nodes.at n=9A000699
• Duplicate of A000699.at n=8A051863
• G.f. satisfies: A(x) = G(x/A(x)) where o.g.f. G(x) = A(x*G(x)) = Sum_{n>=0} A000085(n)*x^n.at n=18A172395
• Triangle T(n,k) read by rows: coefficients of polynomials P_n(t) defined in Formula section.at n=29A286795
• Triangle T(n,k) read by rows: coefficients of polynomials P_n(t) defined in Formula section.at n=36A286796
• Triangle T(n,k) read by rows: coefficients of polynomials P_n(t) defined in Formula section. .at n=22A286798
• Triangle read by rows: The number of chord diagrams with n chords and k topologically connected components, 0 <= k <= n.at n=46A322402