DistanceRegular.org
$\text{Berlekamp-van Lint-Seidel graph}$
Number of vertices:
$243$
Diameter:
$2$
Intersection array:
$\{22,20;1,2\}$
Spectrum:
$22^1 4^{132} (-5)^{110}$
Automorphism group:
$3^5 : (2\times M_{11})$
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 2
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Graphs from Golay code and Witt designs
Last updated: 19 January 2017