OA.9.4.3.2


OA(9,4,3,2)
λ = 1, 1 / 4
d(C) = 3
ρ(C) ≤ 2
↙    ↘
OA(3,3,3,1)
λ = 1, 1 / 3
d(C) = 3
ρ(C) ≤ 2
OA(6,3,3,1)
λ = 2, 3 / 7
1 ≤ d(C) ≤ 2
ρ(C) ≤ 2


OA(9,4,3,2) - the codewords of the tetracode! (ref: Nei Sloane's page)

OA(9,3,3,2)
λ = 1, 1 / 2
d(C) = 2
ρ(C) = 1
↙    ↘
OA(3,2,3,1)
λ = 1, 1 / 2
d(C) = 2
ρ(C) = 1
OA(6,2,3,1)
λ = 2, 2 / 3
d(C) = 1
ρ(C) = 1


OA(9,2,3,2)
λ = 1, 1 / 1
d(C) = 1
ρ(C) = 0
↙    ↘
OA(3,1,3,1)
λ = 1, 1 / 1
d(C) = 1
ρ(C) = 0
OA(6,1,3,1)
λ = 2, 1 / 1
d(C) = 1
ρ(C) = 0