72810

Appears in sequences

• Number of rooted trees with leaves of 2 colors where any 2 subtrees extending from the same node have a different number of nodes.at n=13A032306
• Number of connected loopless multigraphs with n edges.at n=11A076864
• Number of (n+1) X (5+1) 0..1 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.at n=11A250726
• a(n) = Sum_{k=0..floor(n/3)} (k+1) * binomial(2*k,2*n-6*k).at n=27A382496