RCD 6.0: Construct an RCD of size (v,k,b)
(c) 2008 Design Computing (designcomputing.net/)

Note: Best RCD for v=12, r=2, k=4 and b=6.

try #     	18
seed      	-1525804309
# of iterations	8
f         	225.0
concurrences	1(36) 2(30) 
E(column) 	0.75
E(row)    	0.88
E         	0.6804
E/U       	1

Plan (as a kxs matrix):

2	3	6	11	0	4	
4	6	9	7	1	8	
1	5	10	9	11	3	
5	7	0	2	8	10	

Note: RCD used 0.0 seconds.