OA.20.19.2.2

OA(20,19,2,2) λ = 5, 1 / 4490 d(C) = 10 ρ(C) ≤ 9
After restrictions: 1 / 52 d(C) = 10 ρ(C) ≤ 9
↙ ↘
OA(10,18,2,1) λ = 5, 85380 / 246462 1 ≤ d(C) ≤ 10 ρ(C) ≤ 9	OA(10,18,2,1)

OA(20,18,2,2) λ = 5, 1 / 3547 d(C) = 9 ρ(C) ≤ 8
After restrictions: 1 / 213 d(C) = 9 ρ(C) ≤ 8
↙ ↘
OA(10,17,2,1) λ = 5, 59748 / 165829 1 ≤ d(C) ≤ 9 ρ(C) ≤ 8	OA(10,17,2,1)

OA(20,17,2,2) λ = 5, 4 / 2862 7 ≤ d(C) ≤ 8 ρ(C) ≤ 7
After restrictions: 1 / 772 d(C) = 8 ρ(C) ≤ 7
↙ ↘
OA(10,16,2,1) λ = 5, 41123 / 109588 1 ≤ d(C) ≤ 8 ρ(C) ≤ 8	OA(10,16,2,1)

OA(20,16,2,2) λ = 5, 9 / 2284 6 ≤ d(C) ≤ 8 ρ(C) ≤ 7
After restrictions: 3 / 1546 d(C) = 7 ρ(C) ≤ 7
↙ ↘
OA(10,15,2,1) λ = 5, 27776 / 70925 1 ≤ d(C) ≤ 8 ρ(C) ≤ 7	OA(10,15,2,1)

OA(20,15,2,2) λ = 5, 14 / 1734 5 ≤ d(C) ≤ 7 ρ(C) ≤ 6
After restrictions: 9 / 1264 6 ≤ d(C) ≤ 7 ρ(C) ≤ 6
↙ ↘
OA(10,14,2,1) λ = 5, 18384 / 44917 1 ≤ d(C) ≤ 7 ρ(C) ≤ 7	OA(10,14,2,1)

OA(20,14,2,2) λ = 5, 21 / 1347 4 ≤ d(C) ≤ 7 ρ(C) ≤ 6
After restrictions: 13 / 962 5 ≤ d(C) ≤ 6 ρ(C) ≤ 6
↙ ↘
OA(10,13,2,1) λ = 5, 11888 / 27718 1 ≤ d(C) ≤ 7 ρ(C) ≤ 6	OA(10,13,2,1)

OA(20,13,2,2) λ = 5, 28 / 1036 3 ≤ d(C) ≤ 6 ρ(C) ≤ 5
After restrictions: 19 / 758 4 ≤ d(C) ≤ 6 ρ(C) ≤ 5
↙ ↘
OA(10,12,2,1) λ = 5, 7500 / 16660 1 ≤ d(C) ≤ 6 ρ(C) ≤ 6	OA(10,12,2,1)

OA(20,12,2,2) λ = 5, 33 / 752 3 ≤ d(C) ≤ 5 ρ(C) ≤ 5
After restrictions: 22 / 563 3 ≤ d(C) ≤ 5 ρ(C) ≤ 5
↙ ↘
OA(10,11,2,1) λ = 5, 4591 / 9686 1 ≤ d(C) ≤ 6 ρ(C) ≤ 5	OA(10,11,2,1)

OA(20,11,2,2) λ = 5, 37 / 546 2 ≤ d(C) ≤ 5 ρ(C) ≤ 4
After restrictions: 28 / 466 2 ≤ d(C) ≤ 5 ρ(C) ≤ 4
↙ ↘
OA(10,10,2,1) λ = 5, 2724 / 5448 1 ≤ d(C) ≤ 5 ρ(C) ≤ 5	OA(10,10,2,1)

OA(20,10,2,2) λ = 5, 42 / 403 1 ≤ d(C) ≤ 5 ρ(C) ≤ 4
After restrictions: 30 / 318 1 ≤ d(C) ≤ 5 ρ(C) ≤ 4
↙ ↘
OA(10,9,2,1) λ = 5, 1555 / 2934 1 ≤ d(C) ≤ 5 ρ(C) ≤ 4	OA(10,9,2,1)

OA(20,9,2,2) λ = 5, 42 / 269 1 ≤ d(C) ≤ 4 ρ(C) ≤ 4
After restrictions: 34 / 196 1 ≤ d(C) ≤ 4 ρ(C) ≤ 4
↙ ↘
OA(10,8,2,1) λ = 5, 851 / 1514 1 ≤ d(C) ≤ 4 ρ(C) ≤ 4	OA(10,8,2,1)

OA(20,8,2,2) λ = 5, 37 / 167 1 ≤ d(C) ≤ 3 ρ(C) ≤ 3
After restrictions: 33 / 153 1 ≤ d(C) ≤ 3 ρ(C) ≤ 3
↙ ↘
OA(10,7,2,1) λ = 5, 441 / 734 1 ≤ d(C) ≤ 3 ρ(C) ≤ 3	OA(10,7,2,1)

OA(20,7,2,2) λ = 5, 33 / 108 1 ≤ d(C) ≤ 3 ρ(C) ≤ 2
After restrictions: 30 / 98 1 ≤ d(C) ≤ 3 ρ(C) ≤ 2
↙ ↘
OA(10,6,2,1) λ = 5, 217 / 338 1 ≤ d(C) ≤ 3 ρ(C) ≤ 3	OA(10,6,2,1)

OA(20,6,2,2) λ = 5, 26 / 60 1 ≤ d(C) ≤ 2 ρ(C) ≤ 2
After restrictions: 22 / 50 1 ≤ d(C) ≤ 2 ρ(C) ≤ 2
↙ ↘
OA(10,5,2,1) λ = 5, 98 / 141 1 ≤ d(C) ≤ 2 ρ(C) ≤ 2	OA(10,5,2,1)

OA(20,5,2,2) λ = 5, 17 / 28 1 ≤ d(C) ≤ 2 ρ(C) = 1
After restrictions: 14 / 24 1 ≤ d(C) ≤ 2 ρ(C) = 1
↙ ↘
OA(10,4,2,1) λ = 5, 41 / 55 1 ≤ d(C) ≤ 2 ρ(C) ≤ 2	OA(10,4,2,1)

OA(20,4,2,2) λ = 5, 9 / 13 d(C) = 1 ρ(C) = 1
After restrictions: 9 / 12 d(C) = 1 ρ(C) = 1
↙ ↘
OA(10,3,2,1) λ = 5, 15 / 18 d(C) = 1 ρ(C) = 1	OA(10,3,2,1)

OA(20,3,2,2) λ = 5, 5 / 6 d(C) = 1 ρ(C) = 1
↙ ↘
OA(10,2,2,1) λ = 5, 5 / 6 d(C) = 1 ρ(C) = 1	OA(10,2,2,1)

OA(20,2,2,2) λ = 5, 1 / 1 d(C) = 1 ρ(C) = 0
↙ ↘
OA(10,1,2,1) λ = 5, 1 / 1 d(C) = 1 ρ(C) = 0	OA(10,1,2,1)