lower bound = 30

C(9,5,4) = 30

Method of Construction: sidorenko method

Lower Bound: de Caen, Kreher, Radziszowski and Mills, 1991

  2  3  4  5  8
  2  3  6  7  8
  4  5  6  7  8
  2  3  4  5  6
  2  3  4  5  7
  2  4  6  7  8
  2  5  6  7  8
  3  4  6  7  8
  3  5  6  7  8
  1  2  3  4  9
  1  2  5  6  9
  1  2  7  8  9
  1  3  5  7  9
  1  3  6  8  9
  1  4  5  8  9
  1  4  6  7  9
  1  2  3  5  8
  2  3  5  8  9
  1  2  3  6  7
  2  3  6  7  9
  1  2  4  5  7
  2  4  5  7  9
  1  2  4  6  8
  2  4  6  8  9
  1  3  4  5  6
  3  4  5  6  9
  1  3  4  7  8
  3  4  7  8  9
  1  5  6  7  8
  5  6  7  8  9