Paley graph P5 | DistanceRegular.org

Paley graph $P_5$

Number of vertices:	$5$
Diameter:	$2$
Intersection array:	$\{2,1; 1,1\}$
Spectrum:	$2^1 \left(\frac{-1+\sqrt{5}}{2}\right)^2 \left(\frac{-1-\sqrt{5}}{2}\right)^2$
Automorphism group:	$5:2$
Distance-transitive:	Yes
Primitive