13 ≤ C(31,20,4) ≤ 16
Created by: Kamal Fadlaoui
Method of Construction: Tabu Search
Lower Bound: Schonheim
1 2 3 4 5 6 7 8 9 10 11 12 14 16 17 23 27 28 29 30
1 2 3 4 5 7 8 9 10 11 13 14 16 19 20 23 25 29 30 31
1 2 3 4 6 8 9 10 13 14 15 17 18 21 22 23 24 26 27 29
1 2 3 4 6 9 10 12 13 16 17 19 20 22 25 27 28 29 30 31
1 2 3 5 6 7 8 10 11 12 13 14 17 19 20 23 25 27 28 31
1 2 3 5 6 7 10 11 13 15 16 17 18 21 22 23 24 26 29 30
1 2 9 10 12 13 15 16 17 18 19 20 21 24 25 26 27 28 30 31
1 3 7 8 12 14 15 17 18 19 20 21 22 23 24 25 26 28 29 31
1 4 5 6 7 9 11 13 15 17 18 19 20 21 22 24 26 27 29 31
1 4 5 6 8 11 12 13 14 15 16 17 18 21 22 24 25 26 28 30
2 3 4 5 6 10 11 12 15 18 19 20 21 22 23 24 25 26 28 31
2 4 6 7 8 10 14 15 16 18 19 20 21 22 23 24 26 29 30 31
2 5 7 8 9 10 11 12 13 14 15 18 21 22 24 25 26 27 28 29
3 4 6 7 9 12 13 15 16 18 21 22 23 24 25 26 27 28 29 30
3 5 8 9 11 13 14 15 16 18 19 20 21 22 23 24 26 27 30 31
4 5 6 7 8 9 11 12 14 16 17 19 20 23 25 27 28 29 30 31