IBD 6.0: Construct an IBD of size (v,k,r)
(c) 2007 Design Computing (designcomputing.net/)

Note: Best 1-resolvable IBD of size (v,k,r)=(6,2,4)

try #     	1
seed      	1200493377796
# of iterations	3
E         	0.5769
E/U       	1
concurrences	0(3) 1(12) 

Plan (blocks are columns):

0	1	4	
2	5	3	

0	2	3	
4	5	1	

4	5	0	
2	3	1	

2	0	4	
3	5	1	

Note: IBD used 0.0 seconds.