lower bound = 7

C(8,7,6) = 7

Method of Construction: lex covering

Lower Bound: Schonheim

  1  2  3  4  5  6  7
  1  2  3  4  5  6  8
  1  2  3  4  5  7  8
  1  2  3  4  6  7  8
  1  2  3  5  6  7  8
  1  2  4  5  6  7  8
  1  3  4  5  6  7  8