C(31,21,3) = 6

Created by: LJCR

Method of Construction: Simple construction from (30,20,3)

Lower Bound: Bounds for fixed number of blocks

  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20 31
  1  2  3  5  8 10 13 17 18 19 21 22 23 24 25 26 27 28 29 30 31
  1  2  4  5  6  7  9 10 11 12 14 15 16 19 20 21 22 24 25 30 31
  1  2  4  5  6  7  9 10 11 12 14 15 16 19 20 23 26 27 28 29 31
  3  4  7  8  9 11 13 17 18 20 21 22 23 24 25 26 27 28 29 30 31
  3  6  8 12 13 14 15 16 17 18 21 22 23 24 25 26 27 28 29 30 31