18 ≤ C(28,21,6) ≤ 20

Created by: Barnabas Toth

Method of Construction: Private Tools

Lower Bound: Schonheim

  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 25 26 27 28
  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 18 21 23 24 25 27
  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 19 20 22 25 26 27
  1  2  3  4  5  6  7  8  9 10 11 12 13 14 16 17 18 19 20 23 27
  1  2  3  4  5  6  7  8  9 10 11 12 13 14 16 17 21 22 24 26 27
  1  2  3  4  5  6  7  8  9 10 11 12 13 14 17 19 20 21 24 27 28
  1  2  3  4  5  6  7  8  9 10 11 12 13 14 18 20 22 23 26 27 28
  1  2  3  4  5  6  7  8  9 10 11 12 13 15 16 17 20 21 24 25 26
  1  2  3  4  5  6  7  8  9 10 11 12 13 15 16 18 20 22 23 25 28
  1  2  3  4  5  6  7  8  9 10 11 12 13 15 16 19 21 22 24 25 28
  1  2  3  4  5  6  7  8  9 10 11 12 13 15 17 18 19 22 23 25 26
  1  2  3  4  5  6  7  8  9 10 11 12 13 16 18 19 21 23 24 26 28
  1  2  3  4  5  6  7  8  9 10 11 12 13 17 18 20 21 22 23 24 28
  1  2  3 10 11 12 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
  1  4  5  6 10 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
  1  7  8  9 10 11 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
  2  3  4  8 11 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
  2  5  6  7  9 12 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
  3  4  7  9 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
  3  5  6  8 11 12 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28