C(40,11,2) = 18

Created by: Michael Dambmann

Method of Construction: Simulated Annealing

Lower Bound: Horsley, Theorem 14a, r=4, d=1

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