C(54,20,2) = 11

Created by: LJCR

Method of Construction: Multiple of (27,10,2) covering

Lower Bound: Bounds for fixed number of blocks

  1  2  3  4  5  6  7  8  9 10 28 29 30 31 32 33 34 35 36 37
  1  2  8  9 10 11 18 19 26 27 28 29 35 36 37 38 45 46 53 54
  1  2 12 13 14 15 16 17 26 27 28 29 39 40 41 42 43 44 53 54
  1  2 18 19 20 21 22 23 24 25 28 29 45 46 47 48 49 50 51 52
  1 11 12 13 14 15 16 17 18 19 28 38 39 40 41 42 43 44 45 46
  2 11 20 21 22 23 24 25 26 27 29 38 47 48 49 50 51 52 53 54
  3  4  5  6  7 11 18 19 26 27 30 31 32 33 34 38 45 46 53 54
  3  4  5  6 12 13 14 20 21 22 30 31 32 33 39 40 41 47 48 49
  3  4  5  6 15 16 17 23 24 25 30 31 32 33 42 43 44 50 51 52
  7  8  9 10 12 13 14 23 24 25 34 35 36 37 39 40 41 50 51 52
  7  8  9 10 15 16 17 20 21 22 34 35 36 37 42 43 44 47 48 49