C(20,8,3) = 28

Created by: Rade Belic and Jan de Heer

Lower Bound: Schonheim

  1  2  3  4  5  6  7  8
  1  2  3  4  9 10 11 12
  1  2  3  4 13 14 15 16
  1  2  3  4 17 18 19 20
  1  2  5  6  9 10 15 16
  1  2  5  6 11 12 19 20
  1  2  5  6 13 14 17 18
  1  2  7  8  9 10 17 18
  1  2  7  8 11 12 13 14
  1  2  7  8 15 16 19 20
  1  2  9 10 13 14 19 20
  1  2 11 12 15 16 17 18
  3  5  7  9 11 13 15 18
  3  6  8 10 12 14 16 17
  4  5  8 10 11 14 15 19
  4  6  7  9 12 13 16 20
  3  5  7 10 12 14 18 20
  3  6  8  9 11 13 17 19
  4  5  8  9 12 15 17 20
  4  6  7 10 11 16 18 19
  3  5  7  9 14 16 17 19
  3  6  8 10 13 15 18 20
  4  5  8 12 13 16 18 19
  4  6  7 11 14 15 17 20
  4  5 10 11 13 16 17 20
  4  6  9 12 14 15 18 19
  3  7 10 12 13 15 17 19
  3  8  9 11 14 16 18 20