C(39,12,2) = 13

Created by: LJCR

Method of Construction: Multiple of (13,4,2) covering

Lower Bound: Schonheim

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