DistanceRegular.org
Johnson graph $J(18,3)$
Number of vertices:
$816$
Diameter:
$3$
Intersection array:
$\{45,28,13;1,4,9\}$
Spectrum:
$45^1 27^{17} 11^{135} (-3)^{663}$
Automorphism group:
$S_{18}$
Distance-transitive:
Yes
Primitive
Downloads
Adjacency matrix
Adjacency matrix in GAP format
Adjacency matrix in CSV format
Graph in GRAPE format
Links
Andries Brouwer
Wikipedia
Wolfram
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Graphs with 501-1000 vertices
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Graphs with diameter 3
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Johnson Graphs
Last updated: 22 April 2024