Graphical Designs on the Second Blanusa Snark


Graph Info
Vertices 18
Edges 27
Regularity 3
Eigenspaces 16


Spectrum from low to high frequency:

`0, -0.1929, -1.79239, -1.78479, -1.74899, -1.71989, -0.3176, -1.58779, -0.44960, -1.45979, -1.42459, -0.6667^3, -0.7327, -0.7679, -1.18499, -0.8360`


Optimal Design Blanusa Snark 2


Design Info
`k`-graphical design
`k=5`
Efficacy
`2/5`
Optimal yes
Maximal no
Extremal no
1-Neighborhood is the graph no



Maximal Design Blanusa Snark 2


Design Info
`k`-graphical design
`k=11`
Efficacy
`9/11`
Optimal no
Maximal yes
Extremal no
1-Neighborhood is the graph yes



Get the code or see Wikipedia for more about the Blanusa snarks