DistanceRegular.org
$\text{M}_{22} \text{ graph}$
Number of vertices:
$77$
Diameter:
$2$
Intersection array:
$\{28,15;1,12\}$
Spectrum:
$16^1 2^{55} (-6)^{21}$
Automorphism group:
$M_{22}.2$
Distance-transitive:
$\text{Yes}$
Primitive
$\text{Downloads}$
$\text{Adjacency matrix}$
$\text{Adjacency matrix in GAP format}$
$\text{Adjacency matrix in CSV format}$
$\text{Graph in GRAPE format}$
$\text{Links}$
$\text{Andries Brouwer}$
$\text{Wolfram}$
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Graphs with 51-100 vertices
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Graphs with diameter 2
Last updated: 4 February 2017