OA(64,7,2,5)

λ = 2, 2 / 4

1 ≤ d(C) ≤ 2

ρ(C) = 1

After reduction: 2 / 4

1 ≤ d(C) ≤ 2

ρ(C) = 1

↙    ↘

OA(32,6,2,4)

λ = 2, 2 / 4

1 ≤ d(C) ≤ 2

ρ(C) = 1

OA(32,6,2,4)

After reduction: 2 / 4

1 ≤ d(C) ≤ 2

ρ(C) = 1

After reduction: 2 / 4

  ↙     ↘   

   ↙     ↘  

OA(16,5,2,3)

λ = 2, 2 / 4

1 ≤ d(C) ≤ 2

ρ(C) = 1

OA(16,5,2,3)

OA(16,5,2,3)

After reduction: 2 / 4

1 ≤ d(C) ≤ 2

ρ(C) = 1

After reduction: 2 / 4

After reduction: 2 / 4

  ↙     ↘   

  ↙     ↘   

   ↙     ↘  

OA(8,4,2,2)

λ = 2, 2 / 4

1 ≤ d(C) ≤ 2

ρ(C) = 1

OA(8,4,2,2)

OA(8,4,2,2)

OA(8,4,2,2)

After reduction: 2 / 4

1 ≤ d(C) ≤ 2

ρ(C) = 1

After reduction: 2 / 4

After reduction: 2 / 4

After reduction: 2 / 4

  ↙    ↘   

  ↙    ↘   

  ↙    ↘   

   ↙    ↘  

OA(4,3,2,1)

λ = 2, 3 / 5

1 ≤ d(C) ≤ 2

ρ(C) = 1

OA(4,3,2,1)

OA(4,3,2,1)

OA(4,3,2,1)

OA(4,3,2,1)

OA(64,6,2,5)

λ = 2, 2 / 3

d(C) = 1

ρ(C) = 1

↙    ↘

OA(32,5,2,4)

λ = 2, 2 / 3

d(C) = 1

ρ(C) = 1

OA(32,5,2,4)

  ↙     ↘   

   ↙     ↘  

OA(16,4,2,3)

λ = 2, 2 / 3

d(C) = 1

ρ(C) = 1

OA(16,4,2,3)

OA(16,4,2,3)

  ↙     ↘   

  ↙     ↘   

   ↙     ↘  

OA(8,3,2,2)

λ = 2, 2 / 3

d(C) = 1

ρ(C) = 1

OA(8,3,2,2)

OA(8,3,2,2)

OA(8,3,2,2)

  ↙     ↘   

  ↙     ↘   

  ↙     ↘   

   ↙     ↘  

OA(4,2,2,1)

λ = 2, 2 / 3

d(C) = 1

ρ(C) = 1

OA(4,2,2,1)

OA(4,2,2,1)

OA(4,2,2,1)

OA(4,2,2,1)

OA(64,5,2,5)

λ = 2, 1 / 1

d(C) = 1

ρ(C) = 0

↙    ↘

OA(32,4,2,4)

λ = 2, 1 / 1

d(C) = 1

ρ(C) = 0

OA(32,4,2,4)

  ↙     ↘   

   ↙     ↘  

OA(16,3,2,3)

λ = 2, 1 / 1

d(C) = 1

ρ(C) = 0

OA(16,3,2,3)

OA(16,3,2,3)

  ↙     ↘   

  ↙     ↘   

   ↙     ↘  

OA(8,2,2,2)

λ = 2, 1 / 1

d(C) = 1

ρ(C) = 0

OA(8,2,2,2)

OA(8,2,2,2)

OA(8,2,2,2)

  ↙     ↘   

  ↙     ↘   

  ↙     ↘   

   ↙     ↘  

OA(4,1,2,1)

λ = 2, 1 / 1

d(C) = 1

ρ(C) = 0

OA(4,1,2,1)

OA(4,1,2,1)

OA(4,1,2,1)

OA(4,1,2,1)