C(53,20,2) = 11

Created by: LJCR

Method of Construction: Simple construction from (52,19,2)

Lower Bound: Bounds for fixed number of blocks

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