C(50,22,2) = 7

Created by: LJCR

Method of Construction: Multiple of (25,11,2) covering

Lower Bound: Schonheim

  1  2  3  4  5  6  9 14 15 19 22 26 27 28 29 30 31 34 39 40 44 47
  1  3  4  5 10 11 16 17 20 23 25 26 28 29 30 35 36 41 42 45 48 50
  1  3  5  6  7  8 12 13 18 21 24 26 28 30 31 32 33 37 38 43 46 49
  2  4  6 11 14 17 18 21 22 24 25 27 29 31 36 39 42 43 46 47 49 50
  2  7  8 10 12 13 14 16 20 22 23 27 32 33 35 37 38 39 41 45 47 48
  4  7  8  9 11 12 13 15 17 19 25 29 32 33 34 36 37 38 40 42 44 50
  6  9 10 15 16 18 19 20 21 23 24 31 34 35 40 41 43 44 45 46 48 49