A Combinatorial Object

Coxeter Graph

Coxeter Graph

Vertices: 28

Edges: 42

Radius: 4

Diameter: 4

Girth: 7

Automorphisms:
336 (PGL2(7))

Chromatic number: 3

Chromatic index: 3

Properties:
Symmetric, Distance-regular, Distance-transitive, Cubic, Hypohamiltonian

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