C(39,21,2) = 6

Created by: LJCR

Method of Construction: Multiple of (13,7,2) covering

Lower Bound: Bounds for fixed number of blocks

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