cibd 10.0: Program for Constructing cyclic IBDs of size (v,k,r)
(c) 2018 Design Computing (http://designcomputing.net/)

Note: Best cyclic IBD for v=7, k=3, r=15, b=35

Try	iter	E	E/U	Concurrences
1	1	0.778	1	5(6) 

Initial block(s) and the no. of blocks generated by each initial block for try 1 using seed 1533471824890:

0	3	1	 (7)
0	6	4	 (7)
0	6	5	 (7)
0	4	2	 (7)
0	3	6	 (7)

Plan (blocks are columns):

5	0	1	2	6	4	3	
1	3	4	5	2	0	6	
6	1	2	3	0	5	4	

5	3	4	6	0	1	2	
4	2	3	5	6	0	1	
2	0	1	3	4	5	6	

1	6	0	4	2	3	5	
0	5	6	3	1	2	4	
6	4	5	2	0	1	3	

4	0	5	6	2	3	1	
1	4	2	3	6	0	5	
6	2	0	1	4	5	3	

4	3	6	5	1	2	0	
0	6	2	1	4	5	3	
3	2	5	4	0	1	6	

Note: The order of treatments within each block is not randomized.
Note: cibd used 2.525 seconds.
Note: Evaluation copy - purchase at www.designcomputing.net