12 ≤ C(21,14,4) ≤ 14
Method of Construction: dynamic programming covering
Lower Bound: Schonheim
1 2 3 4 5 6 7 8 9 10 11 12 13 14
1 2 3 4 5 6 7 8 9 10 11 12 15 16
1 2 3 4 5 6 7 8 9 10 11 12 17 18
1 2 3 4 5 6 7 8 9 10 11 12 19 20
1 2 3 4 5 6 7 8 9 10 11 12 16 21
2 3 5 7 8 13 14 15 16 17 18 19 20 21
1 4 6 8 9 13 14 15 16 17 18 19 20 21
1 3 4 5 10 13 14 15 16 17 18 19 20 21
2 3 6 9 10 13 14 15 16 17 18 19 20 21
1 5 7 9 11 13 14 15 16 17 18 19 20 21
4 5 6 7 12 13 14 15 16 17 18 19 20 21
1 2 4 11 12 13 14 15 16 17 18 19 20 21
3 6 9 11 12 13 14 15 16 17 18 19 20 21
7 8 10 11 12 13 14 15 16 17 18 19 20 21