lower bound = 9

C(17,7,2) = 9

Method of Construction: random greedy covering

Lower Bound: Bounds for fixed number of blocks

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