C(69,24,2) = 12

Created by: LJCR

Method of Construction: Multiple of (23,8,2) covering

Lower Bound: Bounds for fixed number of blocks

  1  2  3  4  5  6  7  8 24 25 26 27 28 29 30 31 47 48 49 50 51 52 53 54
  1  8 11 12 16 17 22 23 24 31 34 35 39 40 45 46 47 54 57 58 62 63 68 69
  1  9 10 11 12 13 14 15 24 32 33 34 35 36 37 38 47 55 56 57 58 59 60 61
  1 16 17 18 19 20 21 22 24 39 40 41 42 43 44 45 47 62 63 64 65 66 67 68
  2  3  4  9 10 16 17 23 25 26 27 32 33 39 40 46 48 49 50 55 56 62 63 69
  2  3  4 11 12 20 21 22 25 26 27 34 35 43 44 45 48 49 50 57 58 66 67 68
  2  8  9 10 11 16 18 19 25 31 32 33 34 39 41 42 48 54 55 56 57 62 64 65
  2  8 13 14 15 20 21 23 25 31 36 37 38 43 44 46 48 54 59 60 61 66 67 69
  3  4 13 14 15 18 19 22 26 27 36 37 38 41 42 45 49 50 59 60 61 64 65 68
  5  6  7  9 10 20 21 22 28 29 30 32 33 43 44 45 51 52 53 55 56 66 67 68
  5  6  7 11 12 18 19 23 28 29 30 34 35 41 42 46 51 52 53 57 58 64 65 69
  5  6  7 13 14 15 16 17 28 29 30 36 37 38 39 40 51 52 53 59 60 61 62 63