The complement of this graph is the Kneser graph $\mathrm{K}(18,2)$.
Number of vertices: | $153$ |
Diameter: | $2$ |
Intersection array: | $\{32,15;1,4\}$ |
Spectrum: | $32^1 14^{17} (-2)^{135}$ |
Automorphism group: | $\mathrm{S}_{18}$ |
Distance-transitive: | Yes |
Primitive |