234546

Appears in sequences

• Number of series-reduced planted trees with n leaves of 2 colors and no symmetries.at n=12A031148
• Number of asymmetric rooted Greg trees.at n=12A052301
• G.f. A(x) satisfies: A(x) = x - x^2 * exp(A(x) - A(x^2)/2 + A(x^3)/3 - A(x^4)/4 + ...).at n=27A363087
• Number of achiral planar maps with n vertices and 2 faces.at n=15A380238