C(26,10,2) = 10

Created by: LJCR

Method of Construction: Multiple of (13,5,2) covering

Lower Bound: Schonheim

  1  2  3  4  5 14 15 16 17 18
  1  6  7  8  9 14 19 20 21 22
  1  8  9 12 13 14 21 22 25 26
  1 10 11 12 13 14 23 24 25 26
  2  3  4 12 13 15 16 17 25 26
  2  3  6  7 10 15 16 19 20 23
  2  3  8  9 11 15 16 21 22 24
  4  5  6  7 11 17 18 19 20 24
  4  5  8  9 10 17 18 21 22 23
  5  6  7 12 13 18 19 20 25 26