$\text{Ivanov-Ivanov-Faradjev graph}$

Number of vertices:$990$
Intersection array:$\{7,6,4,4,4,1,1,1;1,1,1,2,4,4,6,7\}$
Spectrum:$7^1 5^{42} 4^{55} \frac{1}{2}(-1+\sqrt{33})^{210} 1^{154} 0^{198} (-3)^{99} \frac{1}{2}(-1-\sqrt{33})^{210} (-4)^{21}$
Automorphism group:$3.M_{22}:2$



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Last updated: 30 January 2017

Acknowledgement: thanks to Eamonn O'Brien, Jürgen Müller, Dima Pasechnik and Frank Lübeck for their help with this graph.