Johnson graph $J(20,3)$

Number of vertices:$1140$
Diameter:$3$
Intersection array:$\{51,32,15;1,4,9\}$
Spectrum:$51^1 31^{19} 13^{170} (-3)^{950}$
Automorphism group:$S_{20}$
Distance-transitive:Yes
Primitive




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Last updated: 22 April 2024