DistanceRegular.org
Diameter-9 distance-regular graphs
No. of vertices
Intersection Array
Graph
252
$\{5,4,4,3,3,2,2,1,1;1,1,2,2,3,3,4,4,5\}$
Doubled Odd graph $D(O_5)$
512
$\{9,8,7,6,5,4,3,2,1; 1,2,3,4,5,6,7,8,9\}$
9-cube $Q_9 \cong H(9,2)$
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Graphs by diameter
Last updated: 21 February 2017