C(41,19,2) = 7

Created by: LJCR

Method of Construction: Simple construction from (42,19,2)

Lower Bound: Schonheim

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