A208643 - cp's OEIS frontend

A208643 Least positive integer m such that those k*(k-1) mod m with k=1,...,n are pairwise distinct.

n	a(n)
1	1
2	3
3	5
4	7
5	11
6	11
7	13
8	16
9	17
10	19
11	23
12	23
13	29
14	29
15	29
16	31
17	37
18	37
19	37
20	41
21	41
22	43
23	47
24	47
25	53
26	53
27	53
28	59
29	59
30	59
31	61
32	64
33	67
34	67
35	71
36	71
37	73
38	79
39	79
40	79
41	83
42	83
43	89
44	89
45	89
46	97
47	97
48	97
49	97
50	101
51	101
52	103
53	107
54	107
55	109
56	113
57	113
58	127
59	127
60	127

[1, 3, 5, 7, 11, 11, 13, 16, 17, 19, 23, 23, 29, 29, 29, 31, 37, 37, 37, 41, 41, 43, 47, 47, 53, 53, 53, 59, 59, 59, 61, 64, 67, 67, 71, 71, 73, 79, 79, 79, 83, 83, 89, 89, 89, 97, 97, 97, 97, 101, 101, 103, 107, 107, 109, 113, 113, 127, 127, 127]

cp's OEIS Frontend

A208643 Least positive integer m such that those k*(k-1) mod m with k=1,...,n are pairwise distinct.

Table of values

List of values

n	a(n)
1	1
2	3
3	5
4	7
5	11
6	11
7	13
8	16
9	17
10	19
11	23
12	23
13	29
14	29
15	29
16	31
17	37
18	37
19	37
20	41
21	41
22	43
23	47
24	47
25	53
26	53
27	53
28	59
29	59
30	59
31	61
32	64
33	67
34	67
35	71
36	71
37	73
38	79
39	79
40	79
41	83
42	83
43	89
44	89
45	89
46	97
47	97
48	97
49	97
50	101
51	101
52	103
53	107
54	107
55	109
56	113
57	113
58	127
59	127
60	127

n	a(n)
1	1
2	3
3	5
4	7
5	11
6	11
7	13
8	16
9	17
10	19
11	23
12	23
13	29
14	29
15	29
16	31
17	37
18	37
19	37
20	41
21	41
22	43
23	47
24	47
25	53
26	53
27	53
28	59
29	59
30	59
31	61
32	64
33	67
34	67
35	71
36	71
37	73
38	79
39	79
40	79
41	83
42	83
43	89
44	89
45	89
46	97
47	97
48	97
49	97
50	101
51	101
52	103
53	107
54	107
55	109
56	113
57	113
58	127
59	127
60	127

n	a(n)
1	1
2	3
3	5
4	7
5	11
6	11
7	13
8	16
9	17
10	19
11	23
12	23
13	29
14	29
15	29
16	31
17	37
18	37
19	37
20	41
21	41
22	43
23	47
24	47
25	53
26	53
27	53
28	59
29	59
30	59
31	61
32	64
33	67
34	67
35	71
36	71
37	73
38	79
39	79
40	79
41	83
42	83
43	89
44	89
45	89
46	97
47	97
48	97
49	97
50	101
51	101
52	103
53	107
54	107
55	109
56	113
57	113
58	127
59	127
60	127