lower bound = 19

C(22,6,2) = 19

Created by: LJCR

Method of Construction: Multiple of (11,3,2) covering

Lower Bound: Schonheim

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