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

Note: Best RCD for v=12, r=3, k=4 and b=9.

try #     	44
seed      	-1395332269
# of iterations	9
f         	1083.38
concurrences	3(66) 
E(column) 	0.8049
E(row)    	0.967
E         	0.7834
E/U       	1

Plan (as a kxs matrix):

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

Note: RCD used 0.0 seconds.