15 ≤ C(19,9,3) ≤ 17

Created by: Rade Belic

Lower Bound: Schonheim

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