OA.256.16.2.5


OA(256,16,2,5)
λ = 8, 2 / 22497
5 ≤ d(C) ≤ 6
ρ(C) ≤ 4
After reduction: 1 / 5
d(C) = 6
ρ(C) ≤ 4
↙    ↘
OA(128,15,2,4)
λ = 8, 3 / 17694
5 ≤ d(C) ≤ 6
ρ(C) ≤ 5
OA(128,15,2,4)
After reduction: 1 / 8
d(C) = 6
ρ(C) ≤ 5
After reduction: 1 / 8
  ↙     ↘   
   ↙     ↘  
OA(64,14,2,3)
λ = 8, 3971 / 31572
1 ≤ d(C) ≤ 6
ρ(C) ≤ 5
OA(64,14,2,3)
OA(64,14,2,3)
After reduction: 2124 / 22798
1 ≤ d(C) ≤ 6
ρ(C) ≤ 5
After reduction: 2124 / 22798
After reduction: 2124 / 22798
  ↙     ↘   
  ↙     ↘   
   ↙     ↘  
OA(32,13,2,2)
λ = 8, 1329 / 16702
1 ≤ d(C) ≤ 6
ρ(C) ≤ 5
OA(32,13,2,2)
OA(32,13,2,2)
OA(32,13,2,2)
After reduction: 1268 / 16307
1 ≤ d(C) ≤ 6
ρ(C) ≤ 5
After reduction: 1268 / 16307
After reduction: 1268 / 16307
After reduction: 1268 / 16307
  ↙    ↘   
  ↙    ↘   
  ↙    ↘   
   ↙    ↘  
OA(16,12,2,1)
λ = 8, 319546 / 554003
1 ≤ d(C) ≤ 6
ρ(C) ≤ 6
OA(16,12,2,1)
OA(16,12,2,1)
OA(16,12,2,1)
OA(16,12,2,1)


OA(256,15,2,5)
λ = 8, 4 / 12172
4 ≤ d(C) ≤ 5
ρ(C) ≤ 4
After reduction: 1 / 4
d(C) = 5
ρ(C) ≤ 3
↙    ↘
OA(128,14,2,4)
λ = 8, 4 / 10334
4 ≤ d(C) ≤ 5
ρ(C) ≤ 4
OA(128,14,2,4)
After reduction: 1 / 7
d(C) = 5
ρ(C) ≤ 4
After reduction: 1 / 7
  ↙     ↘   
   ↙     ↘  
OA(64,13,2,3)
λ = 8, 3110 / 18609
1 ≤ d(C) ≤ 5
ρ(C) ≤ 4
OA(64,13,2,3)
OA(64,13,2,3)
After reduction: 1896 / 13485
1 ≤ d(C) ≤ 5
ρ(C) ≤ 4
After reduction: 1896 / 13485
After reduction: 1896 / 13485
  ↙     ↘   
  ↙     ↘   
   ↙     ↘  
OA(32,12,2,2)
λ = 8, 1179 / 10738
1 ≤ d(C) ≤ 5
ρ(C) ≤ 5
OA(32,12,2,2)
OA(32,12,2,2)
OA(32,12,2,2)
After reduction: 1134 / 10516
1 ≤ d(C) ≤ 5
ρ(C) ≤ 5
After reduction: 1134 / 10516
After reduction: 1134 / 10516
After reduction: 1134 / 10516
  ↙    ↘   
  ↙    ↘   
  ↙    ↘   
   ↙    ↘  
OA(16,11,2,1)
λ = 8, 151217 / 252125
1 ≤ d(C) ≤ 5
ρ(C) ≤ 5
OA(16,11,2,1)
OA(16,11,2,1)
OA(16,11,2,1)
OA(16,11,2,1)


OA(256,14,2,5)
λ = 8, 65 / 6415
2 ≤ d(C) ≤ 4
ρ(C) ≤ 3
After reduction: 1 / 31
d(C) = 4
ρ(C) ≤ 3
↙    ↘
OA(128,13,2,4)
λ = 8, 99 / 5684
2 ≤ d(C) ≤ 4
ρ(C) ≤ 4
OA(128,13,2,4)
After reduction: 6 / 561
d(C) = 4
ρ(C) ≤ 3
After reduction: 6 / 561
  ↙     ↘   
   ↙     ↘  
OA(64,12,2,3)
λ = 8, 2467 / 10887
1 ≤ d(C) ≤ 4
ρ(C) ≤ 4
OA(64,12,2,3)
OA(64,12,2,3)
After reduction: 1572 / 7932
1 ≤ d(C) ≤ 4
ρ(C) ≤ 4
After reduction: 1572 / 7932
After reduction: 1572 / 7932
  ↙     ↘   
  ↙     ↘   
   ↙     ↘  
OA(32,11,2,2)
λ = 8, 1005 / 6721
1 ≤ d(C) ≤ 5
ρ(C) ≤ 4
OA(32,11,2,2)
OA(32,11,2,2)
OA(32,11,2,2)
After reduction: 968 / 6559
1 ≤ d(C) ≤ 5
ρ(C) ≤ 4
After reduction: 968 / 6559
After reduction: 968 / 6559
After reduction: 968 / 6559
  ↙    ↘   
  ↙    ↘   
  ↙    ↘   
   ↙    ↘  
OA(16,10,2,1)
λ = 8, 68464 / 109586
1 ≤ d(C) ≤ 5
ρ(C) ≤ 5
OA(16,10,2,1)
OA(16,10,2,1)
OA(16,10,2,1)
OA(16,10,2,1)


OA(256,13,2,5)
λ = 8, 163 / 3197
1 ≤ d(C) ≤ 4
ρ(C) ≤ 3
After reduction: 7 / 63
3 ≤ d(C) ≤ 4
ρ(C) ≤ 3
↙    ↘
OA(128,12,2,4)
λ = 8, 150 / 3025
2 ≤ d(C) ≤ 4
ρ(C) ≤ 3
OA(128,12,2,4)
After reduction: 55 / 1093
3 ≤ d(C) ≤ 4
ρ(C) ≤ 3
After reduction: 55 / 1093
  ↙     ↘   
   ↙     ↘  
OA(64,11,2,3)
λ = 8, 1670 / 5823
1 ≤ d(C) ≤ 4
ρ(C) ≤ 3
OA(64,11,2,3)
OA(64,11,2,3)
After reduction: 1142 / 4373
1 ≤ d(C) ≤ 4
ρ(C) ≤ 3
After reduction: 1142 / 4373
After reduction: 1142 / 4373
  ↙     ↘   
  ↙     ↘   
   ↙     ↘  
OA(32,10,2,2)
λ = 8, 808 / 4054
1 ≤ d(C) ≤ 4
ρ(C) ≤ 4
OA(32,10,2,2)
OA(32,10,2,2)
OA(32,10,2,2)
After reduction: 769 / 3947
1 ≤ d(C) ≤ 4
ρ(C) ≤ 4
After reduction: 769 / 3947
After reduction: 769 / 3947
After reduction: 769 / 3947
  ↙    ↘   
  ↙    ↘   
  ↙    ↘   
   ↙    ↘  
OA(16,9,2,1)
λ = 8, 29463 / 45207
1 ≤ d(C) ≤ 4
ρ(C) ≤ 4
OA(16,9,2,1)
OA(16,9,2,1)
OA(16,9,2,1)
OA(16,9,2,1)


OA(256,12,2,5)
λ = 8, 258 / 1656
1 ≤ d(C) ≤ 3
ρ(C) ≤ 3
After reduction: 10 / 57
2 ≤ d(C) ≤ 3
ρ(C) ≤ 2
↙    ↘
OA(128,11,2,4)
λ = 8, 196 / 1584
1 ≤ d(C) ≤ 3
ρ(C) ≤ 3
OA(128,11,2,4)
After reduction: 67 / 599
2 ≤ d(C) ≤ 3
ρ(C) ≤ 3
After reduction: 67 / 599
  ↙     ↘   
   ↙     ↘  
OA(64,10,2,3)
λ = 8, 1151 / 3080
1 ≤ d(C) ≤ 3
ρ(C) ≤ 3
OA(64,10,2,3)
OA(64,10,2,3)
After reduction: 805 / 2289
1 ≤ d(C) ≤ 3
ρ(C) ≤ 3
After reduction: 805 / 2289
After reduction: 805 / 2289
  ↙     ↘   
  ↙     ↘   
   ↙     ↘  
OA(32,9,2,2)
λ = 8, 613 / 2282
1 ≤ d(C) ≤ 4
ρ(C) ≤ 3
OA(32,9,2,2)
OA(32,9,2,2)
OA(32,9,2,2)
After reduction: 579 / 2197
1 ≤ d(C) ≤ 4
ρ(C) ≤ 3
After reduction: 579 / 2197
After reduction: 579 / 2197
After reduction: 579 / 2197
  ↙    ↘   
  ↙    ↘   
  ↙    ↘   
   ↙    ↘  
OA(16,8,2,1)
λ = 8, 11975 / 17575
1 ≤ d(C) ≤ 4
ρ(C) ≤ 4
OA(16,8,2,1)
OA(16,8,2,1)
OA(16,8,2,1)
OA(16,8,2,1)


OA(256,11,2,5)
λ = 8, 259 / 856
1 ≤ d(C) ≤ 3
ρ(C) ≤ 2
After reduction: 12 / 42
1 ≤ d(C) ≤ 2
ρ(C) ≤ 2
↙    ↘
OA(128,10,2,4)
λ = 8, 184 / 814
1 ≤ d(C) ≤ 3
ρ(C) ≤ 2
OA(128,10,2,4)
After reduction: 74 / 364
1 ≤ d(C) ≤ 3
ρ(C) ≤ 2
After reduction: 74 / 364
  ↙     ↘   
   ↙     ↘  
OA(64,9,2,3)
λ = 8, 647 / 1426
1 ≤ d(C) ≤ 3
ρ(C) ≤ 3
OA(64,9,2,3)
OA(64,9,2,3)
After reduction: 480 / 1082
1 ≤ d(C) ≤ 3
ρ(C) ≤ 2
After reduction: 480 / 1082
After reduction: 480 / 1082
  ↙     ↘   
  ↙     ↘   
   ↙     ↘  
OA(32,8,2,2)
λ = 8, 415 / 1187
1 ≤ d(C) ≤ 3
ρ(C) ≤ 3
OA(32,8,2,2)
OA(32,8,2,2)
OA(32,8,2,2)
After reduction: 399 / 1157
1 ≤ d(C) ≤ 3
ρ(C) ≤ 3
After reduction: 399 / 1157
After reduction: 399 / 1157
After reduction: 399 / 1157
  ↙    ↘   
  ↙    ↘   
  ↙    ↘   
   ↙    ↘  
OA(16,7,2,1)
λ = 8, 4548 / 6375
1 ≤ d(C) ≤ 3
ρ(C) ≤ 3
OA(16,7,2,1)
OA(16,7,2,1)
OA(16,7,2,1)
OA(16,7,2,1)


OA(256,10,2,5)
λ = 8, 147 / 372
1 ≤ d(C) ≤ 2
ρ(C) ≤ 2
After reduction: 25 / 68
1 ≤ d(C) ≤ 2
ρ(C) ≤ 2
↙    ↘
OA(128,9,2,4)
λ = 8, 132 / 378
1 ≤ d(C) ≤ 2
ρ(C) ≤ 2
OA(128,9,2,4)
After reduction: 68 / 205
1 ≤ d(C) ≤ 2
ρ(C) ≤ 2
After reduction: 68 / 205
  ↙     ↘   
   ↙     ↘  
OA(64,8,2,3)
λ = 8, 369 / 652
1 ≤ d(C) ≤ 2
ρ(C) ≤ 2
OA(64,8,2,3)
OA(64,8,2,3)
After reduction: 293 / 528
1 ≤ d(C) ≤ 2
ρ(C) ≤ 2
After reduction: 293 / 528
After reduction: 293 / 528
  ↙     ↘   
  ↙     ↘   
   ↙     ↘  
OA(32,7,2,2)
λ = 8, 267 / 593
1 ≤ d(C) ≤ 3
ρ(C) ≤ 3
OA(32,7,2,2)
OA(32,7,2,2)
OA(32,7,2,2)
After reduction: 255 / 571
1 ≤ d(C) ≤ 3
ρ(C) ≤ 3
After reduction: 255 / 571
After reduction: 255 / 571
After reduction: 255 / 571
  ↙    ↘   
  ↙    ↘   
  ↙    ↘   
   ↙    ↘  
OA(16,6,2,1)
λ = 8, 1601 / 2137
1 ≤ d(C) ≤ 3
ρ(C) ≤ 3
OA(16,6,2,1)
OA(16,6,2,1)
OA(16,6,2,1)
OA(16,6,2,1)


OA(256,9,2,5)
λ = 8, 113 / 182
1 ≤ d(C) ≤ 2
ρ(C) = 1
After reduction: 61 / 114
1 ≤ d(C) ≤ 2
ρ(C) = 1
↙    ↘
OA(128,8,2,4)
λ = 8, 99 / 188
1 ≤ d(C) ≤ 2
ρ(C) ≤ 2
OA(128,8,2,4)
After reduction: 66 / 128
1 ≤ d(C) ≤ 2
ρ(C) = 1
After reduction: 66 / 128
  ↙     ↘   
   ↙     ↘  
OA(64,7,2,3)
λ = 8, 162 / 249
1 ≤ d(C) ≤ 2
ρ(C) ≤ 2
OA(64,7,2,3)
OA(64,7,2,3)
After reduction: 133 / 205
1 ≤ d(C) ≤ 2
ρ(C) ≤ 2
After reduction: 133 / 205
After reduction: 133 / 205
  ↙     ↘   
  ↙     ↘   
   ↙     ↘  
OA(32,6,2,2)
λ = 8, 142 / 250
1 ≤ d(C) ≤ 2
ρ(C) ≤ 2
OA(32,6,2,2)
OA(32,6,2,2)
OA(32,6,2,2)
After reduction: 134 / 240
1 ≤ d(C) ≤ 2
ρ(C) ≤ 2
After reduction: 134 / 240
After reduction: 134 / 240
After reduction: 134 / 240
  ↙    ↘   
  ↙    ↘   
  ↙    ↘   
   ↙    ↘  
OA(16,5,2,1)
λ = 8, 511 / 649
1 ≤ d(C) ≤ 2
ρ(C) ≤ 2
OA(16,5,2,1)
OA(16,5,2,1)
OA(16,5,2,1)
OA(16,5,2,1)


OA(256,8,2,5)
λ = 8, 52 / 72
d(C) = 1
ρ(C) = 1
After reduction: 41 / 59
d(C) = 1
ρ(C) = 1
↙    ↘
OA(128,7,2,4)
λ = 8, 48 / 71
d(C) = 1
ρ(C) = 1
OA(128,7,2,4)
After reduction: 41 / 61
d(C) = 1
ρ(C) = 1
After reduction: 41 / 61
  ↙     ↘   
   ↙     ↘  
OA(64,6,2,3)
λ = 8, 73 / 93
d(C) = 1
ρ(C) = 1
OA(64,6,2,3)
OA(64,6,2,3)
After reduction: 59 / 78
d(C) = 1
ρ(C) = 1
After reduction: 59 / 78
After reduction: 59 / 78
  ↙     ↘   
  ↙     ↘   
   ↙     ↘  
OA(32,5,2,2)
λ = 8, 66 / 93
1 ≤ d(C) ≤ 2
ρ(C) = 1
OA(32,5,2,2)
OA(32,5,2,2)
OA(32,5,2,2)
After reduction: 62 / 89
1 ≤ d(C) ≤ 2
ρ(C) = 1
After reduction: 62 / 89
After reduction: 62 / 89
After reduction: 62 / 89
  ↙    ↘   
  ↙    ↘   
  ↙    ↘   
   ↙    ↘  
OA(16,4,2,1)
λ = 8, 147 / 177
1 ≤ d(C) ≤ 2
ρ(C) ≤ 2
OA(16,4,2,1)
OA(16,4,2,1)
OA(16,4,2,1)
OA(16,4,2,1)


OA(256,7,2,5)
λ = 8, 20 / 25
d(C) = 1
ρ(C) = 1
After reduction: 20 / 25
d(C) = 1
ρ(C) = 1
↙    ↘
OA(128,6,2,4)
λ = 8, 20 / 25
d(C) = 1
ρ(C) = 1
OA(128,6,2,4)
After reduction: 20 / 25
d(C) = 1
ρ(C) = 1
After reduction: 20 / 25
  ↙     ↘   
   ↙     ↘  
OA(64,5,2,3)
λ = 8, 23 / 28
d(C) = 1
ρ(C) = 1
OA(64,5,2,3)
OA(64,5,2,3)
After reduction: 23 / 28
d(C) = 1
ρ(C) = 1
After reduction: 23 / 28
After reduction: 23 / 28
  ↙     ↘   
  ↙     ↘   
   ↙     ↘  
OA(32,4,2,2)
λ = 8, 23 / 29
d(C) = 1
ρ(C) = 1
OA(32,4,2,2)
OA(32,4,2,2)
OA(32,4,2,2)
After reduction: 23 / 29
d(C) = 1
ρ(C) = 1
After reduction: 23 / 29
After reduction: 23 / 29
After reduction: 23 / 29
  ↙    ↘   
  ↙    ↘   
  ↙    ↘   
   ↙    ↘  
OA(16,3,2,1)
λ = 8, 36 / 41
d(C) = 1
ρ(C) = 1
OA(16,3,2,1)
OA(16,3,2,1)
OA(16,3,2,1)
OA(16,3,2,1)


OA(256,6,2,5)
λ = 8, 8 / 9
d(C) = 1
ρ(C) = 1
↙    ↘
OA(128,5,2,4)
λ = 8, 8 / 9
d(C) = 1
ρ(C) = 1
OA(128,5,2,4)
  ↙     ↘   
   ↙     ↘  
OA(64,4,2,3)
λ = 8, 8 / 9
d(C) = 1
ρ(C) = 1
OA(64,4,2,3)
OA(64,4,2,3)
  ↙     ↘   
  ↙     ↘   
   ↙     ↘  
OA(32,3,2,2)
λ = 8, 8 / 9
d(C) = 1
ρ(C) = 1
OA(32,3,2,2)
OA(32,3,2,2)
OA(32,3,2,2)
  ↙     ↘   
  ↙     ↘   
  ↙     ↘   
   ↙     ↘  
OA(16,2,2,1)
λ = 8, 8 / 9
d(C) = 1
ρ(C) = 1
OA(16,2,2,1)
OA(16,2,2,1)
OA(16,2,2,1)
OA(16,2,2,1)


OA(256,5,2,5)
λ = 8, 1 / 1
d(C) = 1
ρ(C) = 0
↙    ↘
OA(128,4,2,4)
λ = 8, 1 / 1
d(C) = 1
ρ(C) = 0
OA(128,4,2,4)
  ↙     ↘   
   ↙     ↘  
OA(64,3,2,3)
λ = 8, 1 / 1
d(C) = 1
ρ(C) = 0
OA(64,3,2,3)
OA(64,3,2,3)
  ↙     ↘   
  ↙     ↘   
   ↙     ↘  
OA(32,2,2,2)
λ = 8, 1 / 1
d(C) = 1
ρ(C) = 0
OA(32,2,2,2)
OA(32,2,2,2)
OA(32,2,2,2)
  ↙     ↘   
  ↙     ↘   
  ↙     ↘   
   ↙     ↘  
OA(16,1,2,1)
λ = 8, 1 / 1
d(C) = 1
ρ(C) = 0
OA(16,1,2,1)
OA(16,1,2,1)
OA(16,1,2,1)
OA(16,1,2,1)