C(19,14,4) = 9

Method of Construction: simple construction: added element to c(v-1,k-1,t) covering

Lower Bound: Todorov, JCTA, 1985

  2  3  4  5  6  7  8  9 10 11 12 13 14 19
  2  3  4  5  6  7  8  9 10 11 15 16 17 19
  1  2  3  4  5  6  7  8  9 10 11 13 18 19
  1  3  6  7 10 11 12 13 14 15 16 17 18 19
  1  2  5  6  7  9 12 13 14 15 16 17 18 19
  1  2  4  7  8 10 12 13 14 15 16 17 18 19
  1  3  4  5  9 10 12 13 14 15 16 17 18 19
  1  4  6  8  9 11 12 13 14 15 16 17 18 19
  1  2  3  5  8 11 12 13 14 15 16 17 18 19