26 ≤ C(41,9,2) ≤ 28

Created by: Colin Barker

Method of Construction: Simulated Annealing

Lower Bound: Horsley, Theorem 14a, r=5, d=0

  1  2  3  4  5  6  7  8  9
  1  2  7 14 23 27 29 35 41
  1  2  7 15 17 21 25 26 28
  1  7 10 18 19 20 32 33 38
  1  7 11 12 13 16 24 39 40
  1  7 22 29 30 31 34 36 37
  2  9 11 17 27 32 33 36 37
  2  9 12 16 18 25 27 31 34
  2  9 13 20 22 24 30 35 38
  2 10 17 19 22 25 30 39 40
  3 10 13 19 24 25 26 27 32
  3 10 17 20 23 29 31 34 38
  3 11 14 20 21 25 28 38 41
  3 12 14 15 16 22 30 33 41
  3 18 21 28 35 36 37 39 40
  4  8 10 11 15 19 31 34 35
  4  8 12 16 20 26 36 37 38
  4  8 13 14 15 17 18 24 41
  4  8 21 22 26 27 28 30 32
  4  8 23 25 29 33 35 39 40
  5  6  9 15 20 27 38 39 40
  5  6 10 14 19 25 36 37 41
  5  6 11 18 22 23 26 29 30
  5  6 12 16 17 26 32 33 35
  5  6 13 21 24 28 31 33 34
  9 10 12 16 19 21 23 28 29
  9 14 26 31 32 34 39 40 41
 13 15 23 24 25 29 32 36 37