C(22,17,4) = 7

Created by: LJCR

Method of Construction: Simple construction from (21,16,4)

Lower Bound: Mills, Covering Designs I, 1979

  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 22
  1  2  3  4  7  8 10 11 12 13 16 17 18 19 20 21 22
  1  2  4  5  8 10 11 12 13 14 16 17 18 19 20 21 22
  1  2  4  6  9 10 11 12 13 15 16 17 18 19 20 21 22
  1  3  5  6  7  8  9 11 14 15 16 17 18 19 20 21 22
  2  3  4  5  6  7  8  9 12 14 15 17 18 19 20 21 22
  3  5  6  7  8  9 10 12 13 14 15 17 18 19 20 21 22