DistanceRegular.org
$\text{Hall-Janko near octagon from }J_2.2 \cong \text{Cohen-Tits near octagon}$
Number of vertices:
$315$
Diameter:
$4$
Intersection array:
$\{10,8,8,2;1,1,4,5\}$
Spectrum:
$10^1 5^{36} (-2)^{160} 3^{90} (-5)^{28}$
Automorphism group:
$J_2.2$
Distance-transitive:
$\text{Yes}$
Primitive
$\text{Downloads}$
$\text{Adjacency matrix}$
$\text{Adjacency matrix in GAP format}$
$\text{Adjacency matrix in CSV format}$
$\text{Graph in GRAPE format}$
$\text{Links}$
$\text{Andries Brouwer}$
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Graphs with diameter 4
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Graphs with valency 10
Last updated: 25 July 2017