C(45,21,2) = 7

Created by: LJCR

Method of Construction: Multiple of (15,7,2) covering

Lower Bound: Schonheim

  1  2  3  4  5  6  7 16 17 18 19 20 21 22 31 32 33 34 35 36 37
  1  2  3 12 13 14 15 16 17 18 27 28 29 30 31 32 33 42 43 44 45
  1  8  9 10 11 12 13 16 23 24 25 26 27 28 31 38 39 40 41 42 43
  2  3  4  8  9 14 15 17 18 19 23 24 29 30 32 33 34 38 39 44 45
  2  3  4 10 11 12 13 17 18 19 25 26 27 28 32 33 34 40 41 42 43
  5  6  7  8  9 12 13 20 21 22 23 24 27 28 35 36 37 38 39 42 43
  5  6  7 10 11 14 15 20 21 22 25 26 29 30 35 36 37 40 41 44 45