C(42,19,2) = 7

Created by: LJCR

Method of Construction: Simple construction from (43,19,2)

Lower Bound: Schonheim

  1  2  3  5  7  8 12 13 15 25 26 28 29 30 33 34 37 41 42
  1  2  3  6  8 10 14 16 19 21 23 27 28 31 33 34 35 38 39
  1  4  9 11 12 13 14 15 19 22 23 25 27 31 36 38 40 41 42
  1  6 10 12 15 16 17 18 20 21 24 25 26 29 32 35 39 41 42
  2  3  4  8  9 11 17 18 20 22 24 27 28 29 32 33 34 36 40
  4  5  6  7  9 10 11 13 16 21 22 26 30 33 35 36 37 39 40
  5  6  7 13 14 17 18 19 20 23 24 26 27 29 30 31 32 37 38