14 ≤ C(51,15,2) ≤ 16

Created by: LJCR

Method of Construction: Multiple of (17,5,2) covering

Lower Bound: Schonheim

  1  2 11 14 16 18 19 28 31 33 35 36 45 48 50
  1  3  5 15 17 18 20 22 32 34 35 37 39 49 51
  1  4  9 10 17 18 21 26 27 34 35 38 43 44 51
  1  6  7 10 13 18 23 24 27 30 35 40 41 44 47
  1  6  8 12 15 18 23 25 29 32 35 40 42 46 49
  2  3  4 13 15 19 20 21 30 32 36 37 38 47 49
  2  3  6  9 12 19 20 23 26 29 36 37 40 43 46
  2  4  7  8 17 19 21 24 25 34 36 38 41 42 51
  2  5  7 10 12 19 22 24 27 29 36 39 41 44 46
  3  6  7 16 17 20 23 24 33 34 37 40 41 50 51
  3  8 10 11 14 20 25 27 28 31 37 42 44 45 48
  4  5  6 11 14 21 22 23 28 31 38 39 40 45 48
  4 10 12 15 16 21 27 29 32 33 38 44 46 49 50
  5  8  9 13 16 22 25 26 30 33 39 42 43 47 50
  7  9 11 14 15 24 26 28 31 32 41 43 45 48 49
 11 12 13 14 17 28 29 30 31 34 45 46 47 48 51