DistanceRegular.org
$\text{Unitals in }PG(2,4)$
Number of vertices:
$280$
Diameter:
$4$
Intersection array:
$\{9,8,6,3;1,1,3,8\}$
Spectrum:
$9^1 4^{64} 1^{105} (-3)^{90} (-5)^{20}$
Automorphism group:
$P \Gamma L(3,4).2$
Distance-transitive:
$\text{Yes}$
Primitive
$\text{Downloads}$
$\text{Adjacency matrix}$
$\text{Adjacency matrix in GAP format}$
$\text{Adjacency matrix in CSV format}$
$\text{Graph in GRAPE format}$
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Graphs with more than 200 vertices
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Graphs with diameter 4
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Graphs with valency 9
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Graphs from Golay codes and Witt designs
Last updated: 8 February 2017