Bib 2.2: Construct incomplete block designs of size (v,k,r)
(C) Copyright 2000-2002 Design Computing (URL: www.designcomputing.net/gendex)

Note: Incomplete block design for v=21, k=6, r=10 and b=35.

try #     	2094
seed      	-1807881352
# of iterations	54
E         	0.8733
E/U       	0.9997
concurrences	2(105) 3(105) 

Plan (Blocks are columns):

2	9	19	19	10	6	16	
5	15	5	14	20	9	6	
20	1	12	15	4	12	4	
8	13	8	3	0	10	11	
13	0	11	17	14	17	1	
7	18	18	2	16	7	3	

16	11	18	7	14	10	3	
5	0	3	5	6	17	1	
9	10	20	19	9	13	13	
19	15	16	14	0	2	12	
6	20	17	4	1	11	4	
2	12	8	15	8	18	7	

18	14	4	20	0	9	16	
7	19	2	5	8	2	12	
9	17	8	18	19	20	0	
11	6	15	1	7	12	17	
16	11	6	15	3	1	5	
4	13	10	3	10	14	13	

2	7	15	2	17	10	19	
1	13	9	14	5	3	10	
0	20	3	18	4	14	16	
19	15	16	4	20	5	1	
18	11	8	12	6	13	11	
7	6	17	8	0	9	12	

10	9	9	10	19	7	15	
15	3	13	18	20	8	16	
5	11	4	14	6	11	12	
17	2	20	16	12	17	0	
4	5	19	6	18	1	2	
1	0	8	13	3	14	7	

Note: Bib used 201.74 seconds.