28 ≤ C(42,9,2) ≤ 29
Created by: Colin Barker
Method of Construction: Simulated Annealing
Lower Bound: Schonheim
1 2 3 4 5 6 7 8 9
1 5 6 13 14 19 21 40 41
1 6 10 16 17 18 25 28 31
1 6 11 12 13 29 35 36 37
1 6 15 20 22 23 32 38 39
1 6 24 26 27 30 33 34 42
2 9 10 13 22 23 26 27 40
2 9 10 16 24 35 36 39 41
2 9 11 15 24 25 29 31 33
2 9 12 14 17 19 20 34 37
2 9 18 21 28 30 32 38 42
3 4 5 10 11 21 29 34 39
3 5 13 18 20 24 28 33 41
3 5 17 22 23 30 35 36 42
3 12 25 31 32 35 37 38 40
3 14 15 16 19 21 26 27 35
4 11 17 26 27 29 32 38 41
4 12 16 21 22 23 24 33 37
4 13 14 19 25 30 31 39 42
4 15 18 20 28 34 35 36 40
5 7 12 18 26 27 28 37 39
5 8 13 15 16 17 32 34 38
5 8 20 21 25 26 27 31 36
7 8 10 12 15 30 37 41 42
7 8 17 21 24 33 35 39 40
7 10 11 16 20 29 30 40 42
7 10 13 22 23 25 31 34 41
7 10 14 19 24 32 33 36 38
8 11 14 18 19 22 23 28 29