Design No 1 Group Size 21504 DE27E2BE 2A582D22
Group generators
Treatments are numbered first (invariants LAST therein), then blocks, then sub-blocks, if applicable, then replicates, if applicable
[[10,17]],
[[9,16]],
[[12,19]],
[[8,15]],
[[11,18]],
[[13,20]],
[[7,14]],
[[2,4],[5,6],[9,10],[11,13],[16,17],[18,20]],
[[2,5],[4,6],[8,12],[11,13],[15,19],[18,20]],
[[1,2],[3,6],[7,13],[9,12],[14,20],[16,19]],
[[0,1],[4,6],[8,13],[11,12],[15,20],[18,19]]
Block Intersection Formula 
{(1)^12 (3)^2 }^14 
Initial Blocks, modulo 7:
0 1 3 
0 1 3 

Design No 2 Group Size 42 BEC54377 C5C05E27
Group generators
Treatments are numbered first (invariants LAST therein), then blocks, then sub-blocks, if applicable, then replicates, if applicable
[[1,2,4],[3,6,5],[7,13,11],[9,10,12],[14,16,20],[15,18,17]],
[[1,3,2,6,4,5],[7,16,13,20,11,14],[8,19],[9,15,10,18,12,17]],
[[0,1],[2,6],[3,5],[7,14],[8,20],[9,19],[10,18],[11,17],[12,16],[13,15]]
Block Intersection Formula 
{(0)^1 (1)^9 (2)^3 (3)^1 }^14 
Initial Blocks, modulo 7:
0 1 3 
0 1 5