DistanceRegular.org
Bipartite Doubles
Graph
No. of vertices
Doubled $O_3 \cong$ Desargues graph
20
Doubled $H(2,4) \cong$ Doubled Shrikhande graph $\cong$ Folded 6-cube
32
Doubled $O_4$
70
Doubled Hoffman-Singleton graph
100
Doubled Gewirtz graph
112
Doubled Higman-Sims graph
200
Doubled $M_{22}$ graph
154
Doubled $O_5$
252
Incidence graphs of Leonard semibiplanes
288
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Last updated: 21 February 2017