C(13,10,3) = 4

Method of Construction: lex covering

Lower Bound: Schonheim

  1  2  3  4  5  6  7  8  9 10
  1  2  3  4  5  6  7 11 12 13
  1  2  3  4  8  9 10 11 12 13
  1  5  6  7  8  9 10 11 12 13