12 ≤ C(39,21,3) ≤ 13

Created by: LJCR

Method of Construction: Multiple of (13,7,3) covering

Lower Bound: Schonheim

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