C(40,13,2) = 13

Created by: LJCR

Method of Construction: Simple construction from (39,12,2)

Lower Bound: Schonheim

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