18 ≤ C(41,11,2) ≤ 19
Created by: Jan de Heer and Steve Muir
Method of Construction: Private tools
Lower Bound: Horsley, Theorem 1, r=4, d=0
1 2 6 7 8 15 26 29 30 31 37
1 3 10 13 14 25 29 30 38 40 41
1 4 11 12 17 20 27 29 30 33 36
1 5 12 16 18 24 25 29 30 32 34
1 9 19 21 22 23 28 29 30 35 39
2 3 4 13 19 21 27 31 32 38 39
2 4 5 9 16 17 27 28 31 34 40
2 5 10 11 12 14 22 23 31 35 41
2 9 14 18 20 24 25 28 31 33 36
3 5 6 7 13 20 26 33 34 36 38
3 8 9 11 12 13 15 28 34 37 38
3 13 16 17 18 22 23 24 34 35 38
4 6 7 10 16 22 23 25 26 27 35
4 8 10 14 15 18 24 25 27 37 41
5 8 11 15 16 17 19 21 25 37 39
6 7 9 10 11 14 17 26 28 32 41
6 7 11 12 18 19 21 24 26 39 40
8 15 20 22 23 32 33 35 36 37 40
10 14 16 19 20 21 33 34 36 39 41