52426

Appears in sequences

• Total number of edges in all rooted trees on n nodes.at n=11A095350
• a(n) = 3*a(n-1) + 4*a(n-2), with a(0) = 2, a(1) = 6, a(2) = 10.at n=8A115113
• Number of length n+5 0..1 arrays with every six consecutive terms having the maximum of some three terms equal to the minimum of the remaining three terms.at n=16A250329
• Number of canonical 3-polytopes of size n.at n=10A319959
• G.f. satisfies A(x) = ( 1 + x*A(x)^(3/2) * (1 + x) )^2.at n=7A371576
• Square array T(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where T(n,0) = 0^n and T(n,k) = k * Sum_{r=0..n} binomial(3r+k,r) * binomial(r,n-r)/(3*r+k) for k > 0.at n=52A378323