OA.40.20.2.3

OA(40,20,2,3) λ = 5, 1 / 7563 d(C) = 10 ρ(C) ≤ 7
After reduction: 1 / 15 d(C) = 10 ρ(C) ≤ 7
↙ ↘
	OA(20,19,2,2) λ = 5, 1 / 4490 d(C) = 10 ρ(C) ≤ 9		OA(20,19,2,2)
	After reduction: 1 / 52 d(C) = 10 ρ(C) ≤ 9		After reduction: 1 / 52
	↙ ↘		↙ ↘
OA(10,18,2,1) λ = 5, 85380 / 246462 1 ≤ d(C) ≤ 10 ρ(C) ≤ 9		OA(10,18,2,1)		OA(10,18,2,1)

OA(40,19,2,3) λ = 5, 1 / 5607 d(C) = 9 ρ(C) ≤ 7
After reduction: 1 / 29 d(C) = 9 ρ(C) ≤ 6
↙ ↘
	OA(20,18,2,2) λ = 5, 1 / 3547 d(C) = 9 ρ(C) ≤ 8		OA(20,18,2,2)
	After reduction: 1 / 213 d(C) = 9 ρ(C) ≤ 8		After reduction: 1 / 213
	↙ ↘		↙ ↘
OA(10,17,2,1) λ = 5, 59748 / 165829 1 ≤ d(C) ≤ 9 ρ(C) ≤ 8		OA(10,17,2,1)		OA(10,17,2,1)

OA(40,18,2,3) λ = 5, 4 / 4313 6 ≤ d(C) ≤ 8 ρ(C) ≤ 6
After reduction: 1 / 58 d(C) = 8 ρ(C) ≤ 6
↙ ↘
	OA(20,17,2,2) λ = 5, 4 / 2862 7 ≤ d(C) ≤ 8 ρ(C) ≤ 7		OA(20,17,2,2)
	After reduction: 1 / 772 d(C) = 8 ρ(C) ≤ 7		After reduction: 1 / 772
	↙ ↘		↙ ↘
OA(10,16,2,1) λ = 5, 41123 / 109588 1 ≤ d(C) ≤ 8 ρ(C) ≤ 8		OA(10,16,2,1)		OA(10,16,2,1)

OA(40,17,2,3) λ = 5, 4 / 3236 6 ≤ d(C) ≤ 7 ρ(C) ≤ 6
After reduction: 1 / 102 d(C) = 7 ρ(C) ≤ 6
↙ ↘
	OA(20,16,2,2) λ = 5, 9 / 2284 6 ≤ d(C) ≤ 8 ρ(C) ≤ 7		OA(20,16,2,2)
	After reduction: 3 / 1546 d(C) = 7 ρ(C) ≤ 7		After reduction: 3 / 1546
	↙ ↘		↙ ↘
OA(10,15,2,1) λ = 5, 27776 / 70925 1 ≤ d(C) ≤ 8 ρ(C) ≤ 7		OA(10,15,2,1)		OA(10,15,2,1)

OA(40,16,2,3) λ = 5, 10 / 2417 4 ≤ d(C) ≤ 7 ρ(C) ≤ 6
After reduction: 4 / 137 6 ≤ d(C) ≤ 7 ρ(C) ≤ 5
↙ ↘
	OA(20,15,2,2) λ = 5, 14 / 1734 5 ≤ d(C) ≤ 7 ρ(C) ≤ 6		OA(20,15,2,2)
	After reduction: 9 / 1264 6 ≤ d(C) ≤ 7 ρ(C) ≤ 6		After reduction: 9 / 1264
	↙ ↘		↙ ↘
OA(10,14,2,1) λ = 5, 18384 / 44917 1 ≤ d(C) ≤ 7 ρ(C) ≤ 7		OA(10,14,2,1)		OA(10,14,2,1)

OA(40,15,2,3) λ = 5, 13 / 1722 4 ≤ d(C) ≤ 7 ρ(C) ≤ 5
After reduction: 3 / 80 5 ≤ d(C) ≤ 6 ρ(C) ≤ 5
↙ ↘
	OA(20,14,2,2) λ = 5, 21 / 1347 4 ≤ d(C) ≤ 7 ρ(C) ≤ 6		OA(20,14,2,2)
	After reduction: 13 / 962 5 ≤ d(C) ≤ 6 ρ(C) ≤ 6		After reduction: 13 / 962
	↙ ↘		↙ ↘
OA(10,13,2,1) λ = 5, 11888 / 27718 1 ≤ d(C) ≤ 7 ρ(C) ≤ 6		OA(10,13,2,1)		OA(10,13,2,1)

OA(40,14,2,3) λ = 5, 26 / 1276 3 ≤ d(C) ≤ 6 ρ(C) ≤ 5
After reduction: 6 / 91 4 ≤ d(C) ≤ 5 ρ(C) ≤ 4
↙ ↘
	OA(20,13,2,2) λ = 5, 28 / 1036 3 ≤ d(C) ≤ 6 ρ(C) ≤ 5		OA(20,13,2,2)
	After reduction: 19 / 758 4 ≤ d(C) ≤ 6 ρ(C) ≤ 5		After reduction: 19 / 758
	↙ ↘		↙ ↘
OA(10,12,2,1) λ = 5, 7500 / 16660 1 ≤ d(C) ≤ 6 ρ(C) ≤ 6		OA(10,12,2,1)		OA(10,12,2,1)

OA(40,13,2,3) λ = 5, 39 / 895 3 ≤ d(C) ≤ 5 ρ(C) ≤ 4
After reduction: 5 / 55 3 ≤ d(C) ≤ 5 ρ(C) ≤ 4
↙ ↘
	OA(20,12,2,2) λ = 5, 33 / 752 3 ≤ d(C) ≤ 5 ρ(C) ≤ 5		OA(20,12,2,2)
	After reduction: 22 / 563 3 ≤ d(C) ≤ 5 ρ(C) ≤ 5		After reduction: 22 / 563
	↙ ↘		↙ ↘
OA(10,11,2,1) λ = 5, 4591 / 9686 1 ≤ d(C) ≤ 6 ρ(C) ≤ 5		OA(10,11,2,1)		OA(10,11,2,1)

OA(40,12,2,3) λ = 5, 53 / 644 2 ≤ d(C) ≤ 5 ρ(C) ≤ 4
After reduction: 10 / 79 2 ≤ d(C) ≤ 4 ρ(C) ≤ 4
↙ ↘
	OA(20,11,2,2) λ = 5, 37 / 546 2 ≤ d(C) ≤ 5 ρ(C) ≤ 4		OA(20,11,2,2)
	After reduction: 28 / 466 2 ≤ d(C) ≤ 5 ρ(C) ≤ 4		After reduction: 28 / 466
	↙ ↘		↙ ↘
OA(10,10,2,1) λ = 5, 2724 / 5448 1 ≤ d(C) ≤ 5 ρ(C) ≤ 5		OA(10,10,2,1)		OA(10,10,2,1)

OA(40,11,2,3) λ = 5, 56 / 415 1 ≤ d(C) ≤ 4 ρ(C) ≤ 3
After reduction: 6 / 37 1 ≤ d(C) ≤ 4 ρ(C) ≤ 3
↙ ↘
	OA(20,10,2,2) λ = 5, 42 / 403 1 ≤ d(C) ≤ 5 ρ(C) ≤ 4		OA(20,10,2,2)
	After reduction: 30 / 318 1 ≤ d(C) ≤ 5 ρ(C) ≤ 4		After reduction: 30 / 318
	↙ ↘		↙ ↘
OA(10,9,2,1) λ = 5, 1555 / 2934 1 ≤ d(C) ≤ 5 ρ(C) ≤ 4		OA(10,9,2,1)		OA(10,9,2,1)

OA(40,10,2,3) λ = 5, 62 / 286 2 ≤ d(C) ≤ 4 ρ(C) ≤ 3
After reduction: 12 / 50 2 ≤ d(C) ≤ 4 ρ(C) ≤ 3
↙ ↘
	OA(20,9,2,2) λ = 5, 42 / 269 1 ≤ d(C) ≤ 4 ρ(C) ≤ 4		OA(20,9,2,2)
	After reduction: 34 / 196 1 ≤ d(C) ≤ 4 ρ(C) ≤ 4		After reduction: 34 / 196
	↙ ↘		↙ ↘
OA(10,8,2,1) λ = 5, 851 / 1514 1 ≤ d(C) ≤ 4 ρ(C) ≤ 4		OA(10,8,2,1)		OA(10,8,2,1)

OA(40,9,2,3) λ = 5, 52 / 177 1 ≤ d(C) ≤ 3 ρ(C) ≤ 3
After reduction: 8 / 23 1 ≤ d(C) ≤ 3 ρ(C) ≤ 2
↙ ↘
	OA(20,8,2,2) λ = 5, 37 / 167 1 ≤ d(C) ≤ 3 ρ(C) ≤ 3		OA(20,8,2,2)
	After reduction: 33 / 153 1 ≤ d(C) ≤ 3 ρ(C) ≤ 3		After reduction: 33 / 153
	↙ ↘		↙ ↘
OA(10,7,2,1) λ = 5, 441 / 734 1 ≤ d(C) ≤ 3 ρ(C) ≤ 3		OA(10,7,2,1)		OA(10,7,2,1)

OA(40,8,2,3) λ = 5, 43 / 106 1 ≤ d(C) ≤ 3 ρ(C) ≤ 2
After reduction: 15 / 34 1 ≤ d(C) ≤ 2 ρ(C) ≤ 2
↙ ↘
	OA(20,7,2,2) λ = 5, 33 / 108 1 ≤ d(C) ≤ 3 ρ(C) ≤ 2		OA(20,7,2,2)
	After reduction: 30 / 98 1 ≤ d(C) ≤ 3 ρ(C) ≤ 2		After reduction: 30 / 98
	↙ ↘		↙ ↘
OA(10,6,2,1) λ = 5, 217 / 338 1 ≤ d(C) ≤ 3 ρ(C) ≤ 3		OA(10,6,2,1)		OA(10,6,2,1)

OA(40,7,2,3) λ = 5, 28 / 54 1 ≤ d(C) ≤ 2 ρ(C) ≤ 2
After reduction: 12 / 24 1 ≤ d(C) ≤ 2 ρ(C) ≤ 2
↙ ↘
	OA(20,6,2,2) λ = 5, 26 / 60 1 ≤ d(C) ≤ 2 ρ(C) ≤ 2		OA(20,6,2,2)
	After reduction: 22 / 50 1 ≤ d(C) ≤ 2 ρ(C) ≤ 2		After reduction: 22 / 50
	↙ ↘		↙ ↘
OA(10,5,2,1) λ = 5, 98 / 141 1 ≤ d(C) ≤ 2 ρ(C) ≤ 2		OA(10,5,2,1)		OA(10,5,2,1)

OA(40,6,2,3) λ = 5, 19 / 28 1 ≤ d(C) ≤ 2 ρ(C) = 1
After reduction: 10 / 14 d(C) = 1 ρ(C) = 1
↙ ↘
	OA(20,5,2,2) λ = 5, 17 / 28 1 ≤ d(C) ≤ 2 ρ(C) = 1		OA(20,5,2,2)
	After reduction: 14 / 24 1 ≤ d(C) ≤ 2 ρ(C) = 1		After reduction: 14 / 24
	↙ ↘		↙ ↘
OA(10,4,2,1) λ = 5, 41 / 55 1 ≤ d(C) ≤ 2 ρ(C) ≤ 2		OA(10,4,2,1)		OA(10,4,2,1)

OA(40,5,2,3) λ = 5, 9 / 12 d(C) = 1 ρ(C) = 1
After reduction: 8 / 10 d(C) = 1 ρ(C) = 1
↙ ↘
	OA(20,4,2,2) λ = 5, 9 / 13 d(C) = 1 ρ(C) = 1		OA(20,4,2,2)
	After reduction: 9 / 12 d(C) = 1 ρ(C) = 1		After reduction: 9 / 12
	↙ ↘		↙ ↘
OA(10,3,2,1) λ = 5, 15 / 18 d(C) = 1 ρ(C) = 1		OA(10,3,2,1)		OA(10,3,2,1)

OA(40,4,2,3) λ = 5, 5 / 6 d(C) = 1 ρ(C) = 1
↙ ↘
	OA(20,3,2,2) λ = 5, 5 / 6 d(C) = 1 ρ(C) = 1		OA(20,3,2,2)
	↙ ↘		↙ ↘
OA(10,2,2,1) λ = 5, 5 / 6 d(C) = 1 ρ(C) = 1		OA(10,2,2,1)		OA(10,2,2,1)

OA(40,3,2,3) λ = 5, 1 / 1 d(C) = 1 ρ(C) = 0
↙ ↘
	OA(20,2,2,2) λ = 5, 1 / 1 d(C) = 1 ρ(C) = 0		OA(20,2,2,2)
	↙ ↘		↙ ↘
OA(10,1,2,1) λ = 5, 1 / 1 d(C) = 1 ρ(C) = 0		OA(10,1,2,1)		OA(10,1,2,1)