Keywords: Tamari lattice, hexagons.svg The associahedron of order 4 or K<sub>5</sub> the Hasse diagram of the Tamari lattice of order 4 <br>with triangulated hexagons corresponding to binary trees Own mate2code Associahedron K5 Tamari lattice T4 Hasse diagrams Binary trees Hexagon triangulation Catalan numbers Catalan number bijections trees and triangulation |