17 ≤ C(26,12,3) ≤ 18
Created by: Jan de Heer
Lower Bound: Horsley-Singh, Theorem 18a, s=1
1 2 3 4 5 6 7 8 9 10 24 25
1 2 3 4 11 12 13 14 15 18 19 25
1 2 3 4 11 12 13 14 15 19 23 26
1 2 3 4 16 17 20 21 22 23 25 26
1 2 5 6 9 10 11 13 15 17 19 21
1 2 5 6 9 10 12 14 16 18 20 22
1 2 5 6 9 10 12 14 20 22 23 26
1 2 7 8 11 13 15 16 19 20 22 24
1 2 7 8 12 14 17 18 21 23 24 26
3 4 5 6 7 8 11 12 13 14 16 21
3 4 5 6 7 8 15 17 18 19 20 22
3 4 5 6 7 8 15 19 20 22 23 26
3 4 9 10 11 12 13 14 17 20 22 24
3 4 9 10 15 16 18 19 21 23 24 26
5 6 11 13 18 20 21 22 23 24 25 26
5 6 12 14 15 16 17 19 23 24 25 26
7 8 9 10 11 13 16 17 18 23 25 26
7 8 9 10 12 14 15 19 20 21 22 25