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=61, k=5, r=15, b=183

Try	iter	E	E/U	Concurrences
2189	7	0.813	1	1(60) 

Initial block(s) and the no. of blocks generated by each initial block for try 2189 using seed -1425237480:

0	3	38	54	50	 (61)
0	29	5	46	48	 (61)
0	36	9	8	30	 (61)

Plan (blocks are columns):

58	31	44	7	36	52	17	14	10	43	38	8	5	27	57	22	34	18	59	49	24	41	56	11	40	16	42	29	51	21	53	32	60	30	48	47	50	25	55	3	26	4	45	15	19	54	13	12	20	35	9	6	46	28	2	1	23	37	33	39	0	
0	34	47	10	39	55	20	17	13	46	41	11	8	30	60	25	37	21	1	52	27	44	59	14	43	19	45	32	54	24	56	35	2	33	51	50	53	28	58	6	29	7	48	18	22	57	16	15	23	38	12	9	49	31	5	4	26	40	36	42	3	
35	8	21	45	13	29	55	52	48	20	15	46	43	4	34	60	11	56	36	26	1	18	33	49	17	54	19	6	28	59	30	9	37	7	25	24	27	2	32	41	3	42	22	53	57	31	51	50	58	12	47	44	23	5	40	39	0	14	10	16	38	
51	24	37	0	29	45	10	7	3	36	31	1	59	20	50	15	27	11	52	42	17	34	49	4	33	9	35	22	44	14	46	25	53	23	41	40	43	18	48	57	19	58	38	8	12	47	6	5	13	28	2	60	39	21	56	55	16	30	26	32	54	
47	20	33	57	25	41	6	3	60	32	27	58	55	16	46	11	23	7	48	38	13	30	45	0	29	5	31	18	40	10	42	21	49	19	37	36	39	14	44	53	15	54	34	4	8	43	2	1	9	24	59	56	35	17	52	51	12	26	22	28	50	

34	18	28	22	1	48	40	58	35	24	32	16	13	14	7	11	55	56	36	23	60	2	57	52	43	31	41	54	37	51	4	27	20	10	15	30	9	6	8	0	46	59	21	39	42	29	25	53	50	5	38	12	33	44	19	45	49	17	26	47	3	
2	47	57	51	30	16	8	26	3	53	0	45	42	43	36	40	23	24	4	52	28	31	25	20	11	60	9	22	5	19	33	56	49	39	44	59	38	35	37	29	14	27	50	7	10	58	54	21	18	34	6	41	1	12	48	13	17	46	55	15	32	
39	23	33	27	6	53	45	2	40	29	37	21	18	19	12	16	60	0	41	28	4	7	1	57	48	36	46	59	42	56	9	32	25	15	20	35	14	11	13	5	51	3	26	44	47	34	30	58	55	10	43	17	38	49	24	50	54	22	31	52	8	
19	3	13	7	47	33	25	43	20	9	17	1	59	60	53	57	40	41	21	8	45	48	42	37	28	16	26	39	22	36	50	12	5	56	0	15	55	52	54	46	31	44	6	24	27	14	10	38	35	51	23	58	18	29	4	30	34	2	11	32	49	
21	5	15	9	49	35	27	45	22	11	19	3	0	1	55	59	42	43	23	10	47	50	44	39	30	18	28	41	24	38	52	14	7	58	2	17	57	54	56	48	33	46	8	26	29	16	12	40	37	53	25	60	20	31	6	32	36	4	13	34	51	

17	33	39	48	28	41	51	37	53	20	3	15	7	30	45	57	29	8	14	10	46	35	43	52	47	32	4	11	27	44	24	34	40	31	21	18	26	19	12	6	50	23	36	0	59	5	25	60	56	13	22	58	38	2	9	54	49	55	1	42	16	
53	8	14	23	3	16	26	12	28	56	39	51	43	5	20	32	4	44	50	46	21	10	18	27	22	7	40	47	2	19	60	9	15	6	57	54	1	55	48	42	25	59	11	36	34	41	0	35	31	49	58	33	13	38	45	29	24	30	37	17	52	
26	42	48	57	37	50	60	46	1	29	12	24	16	39	54	5	38	17	23	19	55	44	52	0	56	41	13	20	36	53	33	43	49	40	30	27	35	28	21	15	59	32	45	9	7	14	34	8	4	22	31	6	47	11	18	2	58	3	10	51	25	
25	41	47	56	36	49	59	45	0	28	11	23	15	38	53	4	37	16	22	18	54	43	51	60	55	40	12	19	35	52	32	42	48	39	29	26	34	27	20	14	58	31	44	8	6	13	33	7	3	21	30	5	46	10	17	1	57	2	9	50	24	
47	2	8	17	58	10	20	6	22	50	33	45	37	60	14	26	59	38	44	40	15	4	12	21	16	1	34	41	57	13	54	3	9	0	51	48	56	49	42	36	19	53	5	30	28	35	55	29	25	43	52	27	7	32	39	23	18	24	31	11	46	

Note: The order of treatments within each block is not randomized.
Note: cibd used 7.692 seconds.
Note: Evaluation copy - purchase at www.designcomputing.net