lower bound = 21

C(20,5,2) = 21

Created by: LJCR

Method of Construction: colex greedy covering

Lower Bound: Mills and Mullin, 1992

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