206826

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=14A032306
• Coordination sequence for (3,3,5) tiling of hyperbolic plane.at n=27A265072
• a(n) = Sum_{k=0..floor(n/3)} binomial(3*k,2*n-6*k).at n=25A392435