124032

Appears in sequences

• Number of rooted planar bridgeless cubic maps with 2n nodes.at n=7A000309
• a(n) = A081470(n)/n.at n=14A081471
• a(n) = 4*n^3 + 5*n^2 + 2*n + 1.at n=31A204674
• The number of complete binary trees with bicolored twigs. A twig is a vertex with one child on the boundary and the other child having no descendants.at n=10A228404
• 2-parking triangle T(r, i, 2) read by rows: T(r, i, k) = (r + 1)^(i-1)*binomial(k*(r + 1) + r - i - 1, r - i) with k = 2 and 0 <= i <= r.at n=30A329058
• E.g.f. satisfies A(x) = 1 + log(1 + x*A(x)^3)/A(x)^2.at n=7A367179