This graph is the unique rank-3 strongly regular graph with parameters (378,117,36,36). The local graph of this graph is the NO+6(3) graph. This graph is the local graph of the NO−8(3) graph.
| Number of vertices: | 378 |
| Diameter: | 2 |
| Intersection array: | {117,80;1,36} |
| Spectrum: | 11719182(−9)195 |
| Automorphism group: | PSO(7,3)≅O7(3):2 |
| Distance-transitive: | Yes |
| Primitive |