C(19,16,6) = 9

Method of Construction: lexicographic greedy covering

Lower Bound: Mills, Covering Designs I, 1979

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