A272633 - cp's OEIS frontend

A272633 Discriminator of the primes: Least m > 0 such that (prime(1),...,prime(n)) are all different mod m; a(0) = 0 by convention.

n	a(n)
0	0
1	1
2	2
3	4
4	6
5	7
6	7
7	13
8	13
9	13
10	19
11	19
12	19
13	23
14	23
15	23
16	31
17	31
18	31
19	33
20	37
21	37
22	43
23	43
24	47
25	49
26	53
27	53
28	53
29	55
30	61
31	63
32	67
33	73
34	73
35	75
36	75
37	79
38	83
39	83
40	89
41	89
42	91
43	91
44	97
45	103
46	103
47	109
48	113
49	113
50	115
51	117
52	119
53	121
54	121
55	121
56	121
57	121
58	139
59	139
60	141
61	141
62	151
63	153
64	157
65	157
66	159
67	167
68	169
69	169
70	175
71	181
72	181
73	183
74	187

[0, 1, 2, 4, 6, 7, 7, 13, 13, 13, 19, 19, 19, 23, 23, 23, 31, 31, 31, 33, 37, 37, 43, 43, 47, 49, 53, 53, 53, 55, 61, 63, 67, 73, 73, 75, 75, 79, 83, 83, 89, 89, 91, 91, 97, 103, 103, 109, 113, 113, 115, 117, 119, 121, 121, 121, 121, 121, 139, 139, 141, 141, 151, 153, 157, 157, 159, 167, 169, 169, 175, 181, 181, 183, 187]

cp's OEIS Frontend

A272633 Discriminator of the primes: Least m > 0 such that (prime(1),...,prime(n)) are all different mod m; a(0) = 0 by convention.

Table of values

List of values

n	a(n)
0	0
1	1
2	2
3	4
4	6
5	7
6	7
7	13
8	13
9	13
10	19
11	19
12	19
13	23
14	23
15	23
16	31
17	31
18	31
19	33
20	37
21	37
22	43
23	43
24	47
25	49
26	53
27	53
28	53
29	55
30	61
31	63
32	67
33	73
34	73
35	75
36	75
37	79
38	83
39	83
40	89
41	89
42	91
43	91
44	97
45	103
46	103
47	109
48	113
49	113
50	115
51	117
52	119
53	121
54	121
55	121
56	121
57	121
58	139
59	139
60	141
61	141
62	151
63	153
64	157
65	157
66	159
67	167
68	169
69	169
70	175
71	181
72	181
73	183
74	187

n	a(n)
0	0
1	1
2	2
3	4
4	6
5	7
6	7
7	13
8	13
9	13
10	19
11	19
12	19
13	23
14	23
15	23
16	31
17	31
18	31
19	33
20	37
21	37
22	43
23	43
24	47
25	49
26	53
27	53
28	53
29	55
30	61
31	63
32	67
33	73
34	73
35	75
36	75
37	79
38	83
39	83
40	89
41	89
42	91
43	91
44	97
45	103
46	103
47	109
48	113
49	113
50	115
51	117
52	119
53	121
54	121
55	121
56	121
57	121
58	139
59	139
60	141
61	141
62	151
63	153
64	157
65	157
66	159
67	167
68	169
69	169
70	175
71	181
72	181
73	183
74	187

n	a(n)
0	0
1	1
2	2
3	4
4	6
5	7
6	7
7	13
8	13
9	13
10	19
11	19
12	19
13	23
14	23
15	23
16	31
17	31
18	31
19	33
20	37
21	37
22	43
23	43
24	47
25	49
26	53
27	53
28	53
29	55
30	61
31	63
32	67
33	73
34	73
35	75
36	75
37	79
38	83
39	83
40	89
41	89
42	91
43	91
44	97
45	103
46	103
47	109
48	113
49	113
50	115
51	117
52	119
53	121
54	121
55	121
56	121
57	121
58	139
59	139
60	141
61	141
62	151
63	153
64	157
65	157
66	159
67	167
68	169
69	169
70	175
71	181
72	181
73	183
74	187