OA.27.13.3.2


OA(27,13,3,2)
λ = 3, 1 / 2836
d(C) = 9
ρ(C) ≤ 7
After restrictions: 1 / 2208
d(C) = 9
ρ(C) ≤ 7
↙    ↘
OA(9,12,3,1)
λ = 3, 738 / 3798
1 ≤ d(C) ≤ 9
ρ(C) ≤ 8
OA(18,12,3,1)
λ = 6, 168213 / 471559
1 ≤ d(C) ≤ 8
ρ(C) ≤ 8


OA(27,12,3,2)
λ = 3, 1 / 1914
d(C) = 8
ρ(C) ≤ 7
After restrictions: 1 / 1547
d(C) = 8
ρ(C) ≤ 7
↙    ↘
OA(9,11,3,1)
λ = 3, 506 / 2393
1 ≤ d(C) ≤ 8
ρ(C) ≤ 7
OA(18,11,3,1)
λ = 6, 81072 / 213084
1 ≤ d(C) ≤ 7
ρ(C) ≤ 7


OA(27,11,3,2)
λ = 3, 3 / 1253
6 ≤ d(C) ≤ 7
ρ(C) ≤ 6
After restrictions: 3 / 1059
6 ≤ d(C) ≤ 7
ρ(C) ≤ 6
↙    ↘
OA(9,10,3,1)
λ = 3, 340 / 1468
1 ≤ d(C) ≤ 7
ρ(C) ≤ 6
OA(18,10,3,1)
λ = 6, 37534 / 92133
1 ≤ d(C) ≤ 7
ρ(C) ≤ 6


OA(27,10,3,2)
λ = 3, 10 / 799
4 ≤ d(C) ≤ 6
ρ(C) ≤ 5
After restrictions: 7 / 687
5 ≤ d(C) ≤ 6
ρ(C) ≤ 5
↙    ↘
OA(9,9,3,1)
λ = 3, 222 / 867
1 ≤ d(C) ≤ 6
ρ(C) ≤ 6
OA(18,9,3,1)
λ = 6, 16585 / 37889
1 ≤ d(C) ≤ 6
ρ(C) ≤ 6


OA(27,9,3,2)
λ = 3, 16 / 488
3 ≤ d(C) ≤ 6
ρ(C) ≤ 5
After restrictions: 11 / 416
4 ≤ d(C) ≤ 6
ρ(C) ≤ 5
↙    ↘
OA(9,8,3,1)
λ = 3, 141 / 495
1 ≤ d(C) ≤ 6
ρ(C) ≤ 5
OA(18,8,3,1)
λ = 6, 6959 / 14721
1 ≤ d(C) ≤ 5
ρ(C) ≤ 5


OA(27,8,3,2)
λ = 3, 19 / 285
2 ≤ d(C) ≤ 5
ρ(C) ≤ 4
After restrictions: 16 / 243
3 ≤ d(C) ≤ 5
ρ(C) ≤ 4
↙    ↘
OA(9,7,3,1)
λ = 3, 86 / 268
1 ≤ d(C) ≤ 5
ρ(C) ≤ 4
OA(18,7,3,1)
λ = 6, 2742 / 5353
1 ≤ d(C) ≤ 4
ρ(C) ≤ 4


OA(27,7,3,2)
λ = 3, 19 / 155
1 ≤ d(C) ≤ 4
ρ(C) ≤ 4
After restrictions: 14 / 129
2 ≤ d(C) ≤ 4
ρ(C) ≤ 4
↙    ↘
OA(9,6,3,1)
λ = 3, 51 / 139
1 ≤ d(C) ≤ 4
ρ(C) ≤ 4
OA(18,6,3,1)
λ = 6, 1009 / 1804
1 ≤ d(C) ≤ 4
ρ(C) ≤ 4


OA(27,6,3,2)
λ = 3, 15 / 75
1 ≤ d(C) ≤ 3
ρ(C) ≤ 3
After restrictions: 13 / 66
1 ≤ d(C) ≤ 3
ρ(C) ≤ 3
↙    ↘
OA(9,5,3,1)
λ = 3, 28 / 66
1 ≤ d(C) ≤ 3
ρ(C) ≤ 3
OA(18,5,3,1)
λ = 6, 339 / 553
1 ≤ d(C) ≤ 3
ρ(C) ≤ 3


OA(27,5,3,2)
λ = 3, 13 / 37
1 ≤ d(C) ≤ 3
ρ(C) ≤ 2
After restrictions: 12 / 33
1 ≤ d(C) ≤ 3
ρ(C) ≤ 2
↙    ↘
OA(9,4,3,1)
λ = 3, 15 / 30
1 ≤ d(C) ≤ 3
ρ(C) ≤ 2
OA(18,4,3,1)
λ = 6, 104 / 153
1 ≤ d(C) ≤ 2
ρ(C) ≤ 2


OA(27,4,3,2)
λ = 3, 9 / 16
1 ≤ d(C) ≤ 2
ρ(C) ≤ 2
After restrictions: 8 / 13
1 ≤ d(C) ≤ 2
ρ(C) = 1
↙    ↘
OA(9,3,3,1)
λ = 3, 7 / 12
1 ≤ d(C) ≤ 2
ρ(C) ≤ 2
OA(18,3,3,1)
λ = 6, 27 / 37
1 ≤ d(C) ≤ 2
ρ(C) ≤ 2


OA(27,3,3,2)
λ = 3, 3 / 4
d(C) = 1
ρ(C) = 1
↙    ↘
OA(9,2,3,1)
λ = 3, 3 / 4
d(C) = 1
ρ(C) = 1
OA(18,2,3,1)
λ = 6, 6 / 7
d(C) = 1
ρ(C) = 1


OA(27,2,3,2)
λ = 3, 1 / 1
d(C) = 1
ρ(C) = 0
↙    ↘
OA(9,1,3,1)
λ = 3, 1 / 1
d(C) = 1
ρ(C) = 0
OA(18,1,3,1)
λ = 6, 1 / 1
d(C) = 1
ρ(C) = 0