C(47,13,2) = 18

Created by: Jan de Heer and Steve Muir

Method of Construction: Private tools

Lower Bound: Schonheim

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