C(28,17,2) = 4

Created by: Michael Dambmann

Lower Bound: Schonheim

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