C(65,20,2) = 13

Created by: Colin Barker

Method of Construction: Constructed from c(v/5,k/5,t,t)

Lower Bound: Schonheim

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