Jørgensen–Klin graph
Jørgensen and Klin (2003) constructed several $\mathrm{SRG}(100,44,18,20)$ from the
Hall–Janko graph. This example has the largest automorphism group of the graphs they obtain.
| Number of vertices: | $100$ |
| Diameter: | $2$ |
| Intersection array: | $\{44,25;1,20\}$ |
| Spectrum: | $44^1 4^{55} (-6)^{44}$ |
| Automorphism group: | $5^2:(4 \times 2)$ |
| Distance-transitive: | No |
| Primitive |