OA.128.9.2.5


OA(128,9,2,5)
λ = 4, 6 / 16
1 ≤ d(C) ≤ 2
ρ(C) = 1
After reduction: 1 / 2
d(C) = 2
ρ(C) = 1
↙    ↘
OA(64,8,2,4)
λ = 4, 5 / 18
1 ≤ d(C) ≤ 2
ρ(C) = 1
OA(64,8,2,4)
After reduction: 1 / 3
d(C) = 2
ρ(C) = 1
After reduction: 1 / 3
  ↙     ↘   
   ↙     ↘  
OA(32,7,2,3)
λ = 4, 11 / 27
1 ≤ d(C) ≤ 2
ρ(C) ≤ 2
OA(32,7,2,3)
OA(32,7,2,3)
After reduction: 4 / 10
1 ≤ d(C) ≤ 2
ρ(C) ≤ 2
After reduction: 4 / 10
After reduction: 4 / 10
  ↙     ↘   
  ↙     ↘   
   ↙     ↘  
OA(16,6,2,2)
λ = 4, 12 / 33
1 ≤ d(C) ≤ 2
ρ(C) ≤ 2
OA(16,6,2,2)
OA(16,6,2,2)
OA(16,6,2,2)
After reduction: 9 / 29
1 ≤ d(C) ≤ 2
ρ(C) ≤ 2
After reduction: 9 / 29
After reduction: 9 / 29
After reduction: 9 / 29
  ↙    ↘   
  ↙    ↘   
  ↙    ↘   
   ↙    ↘  
OA(8,5,2,1)
λ = 4, 46 / 73
1 ≤ d(C) ≤ 2
ρ(C) ≤ 2
OA(8,5,2,1)
OA(8,5,2,1)
OA(8,5,2,1)
OA(8,5,2,1)


OA(128,8,2,5)
λ = 4, 7 / 14
1 ≤ d(C) ≤ 2
ρ(C) = 1
After reduction: 7 / 14
1 ≤ d(C) ≤ 2
ρ(C) = 1
↙    ↘
OA(64,7,2,4)
λ = 4, 7 / 14
1 ≤ d(C) ≤ 2
ρ(C) = 1
OA(64,7,2,4)
After reduction: 7 / 14
1 ≤ d(C) ≤ 2
ρ(C) = 1
After reduction: 7 / 14
  ↙     ↘   
   ↙     ↘  
OA(32,6,2,3)
λ = 4, 11 / 18
1 ≤ d(C) ≤ 2
ρ(C) = 1
OA(32,6,2,3)
OA(32,6,2,3)
After reduction: 8 / 15
1 ≤ d(C) ≤ 2
ρ(C) = 1
After reduction: 8 / 15
After reduction: 8 / 15
  ↙     ↘   
  ↙     ↘   
   ↙     ↘  
OA(16,5,2,2)
λ = 4, 9 / 18
1 ≤ d(C) ≤ 2
ρ(C) = 1
OA(16,5,2,2)
OA(16,5,2,2)
OA(16,5,2,2)
After reduction: 9 / 18
1 ≤ d(C) ≤ 2
ρ(C) = 1
After reduction: 9 / 18
After reduction: 9 / 18
After reduction: 9 / 18
  ↙    ↘   
  ↙    ↘   
  ↙    ↘   
   ↙    ↘  
OA(8,4,2,1)
λ = 4, 23 / 33
1 ≤ d(C) ≤ 2
ρ(C) ≤ 2
OA(8,4,2,1)
OA(8,4,2,1)
OA(8,4,2,1)
OA(8,4,2,1)


OA(128,7,2,5)
λ = 4, 6 / 9
d(C) = 1
ρ(C) = 1
After reduction: 6 / 9
d(C) = 1
ρ(C) = 1
↙    ↘
OA(64,6,2,4)
λ = 4, 6 / 9
d(C) = 1
ρ(C) = 1
OA(64,6,2,4)
After reduction: 6 / 9
d(C) = 1
ρ(C) = 1
After reduction: 6 / 9
  ↙     ↘   
   ↙     ↘  
OA(32,5,2,3)
λ = 4, 6 / 9
d(C) = 1
ρ(C) = 1
OA(32,5,2,3)
OA(32,5,2,3)
After reduction: 6 / 9
d(C) = 1
ρ(C) = 1
After reduction: 6 / 9
After reduction: 6 / 9
  ↙     ↘   
  ↙     ↘   
   ↙     ↘  
OA(16,4,2,2)
λ = 4, 6 / 9
d(C) = 1
ρ(C) = 1
OA(16,4,2,2)
OA(16,4,2,2)
OA(16,4,2,2)
After reduction: 6 / 9
d(C) = 1
ρ(C) = 1
After reduction: 6 / 9
After reduction: 6 / 9
After reduction: 6 / 9
  ↙    ↘   
  ↙    ↘   
  ↙    ↘   
   ↙    ↘  
OA(8,3,2,1)
λ = 4, 10 / 13
d(C) = 1
ρ(C) = 1
OA(8,3,2,1)
OA(8,3,2,1)
OA(8,3,2,1)
OA(8,3,2,1)


OA(128,6,2,5)
λ = 4, 4 / 5
d(C) = 1
ρ(C) = 1
↙    ↘
OA(64,5,2,4)
λ = 4, 4 / 5
d(C) = 1
ρ(C) = 1
OA(64,5,2,4)
  ↙     ↘   
   ↙     ↘  
OA(32,4,2,3)
λ = 4, 4 / 5
d(C) = 1
ρ(C) = 1
OA(32,4,2,3)
OA(32,4,2,3)
  ↙     ↘   
  ↙     ↘   
   ↙     ↘  
OA(16,3,2,2)
λ = 4, 4 / 5
d(C) = 1
ρ(C) = 1
OA(16,3,2,2)
OA(16,3,2,2)
OA(16,3,2,2)
  ↙     ↘   
  ↙     ↘   
  ↙     ↘   
   ↙     ↘  
OA(8,2,2,1)
λ = 4, 4 / 5
d(C) = 1
ρ(C) = 1
OA(8,2,2,1)
OA(8,2,2,1)
OA(8,2,2,1)
OA(8,2,2,1)


OA(128,5,2,5)
λ = 4, 1 / 1
d(C) = 1
ρ(C) = 0
↙    ↘
OA(64,4,2,4)
λ = 4, 1 / 1
d(C) = 1
ρ(C) = 0
OA(64,4,2,4)
  ↙     ↘   
   ↙     ↘  
OA(32,3,2,3)
λ = 4, 1 / 1
d(C) = 1
ρ(C) = 0
OA(32,3,2,3)
OA(32,3,2,3)
  ↙     ↘   
  ↙     ↘   
   ↙     ↘  
OA(16,2,2,2)
λ = 4, 1 / 1
d(C) = 1
ρ(C) = 0
OA(16,2,2,2)
OA(16,2,2,2)
OA(16,2,2,2)
  ↙     ↘   
  ↙     ↘   
  ↙     ↘   
   ↙     ↘  
OA(8,1,2,1)
λ = 4, 1 / 1
d(C) = 1
ρ(C) = 0
OA(8,1,2,1)
OA(8,1,2,1)
OA(8,1,2,1)
OA(8,1,2,1)