A090370 - cp's OEIS frontend

A090370 Least m > 3 such that gcd(n-1, m*n - 1) = m-1.

n	a(n)
4	4
5	5
6	6
7	4
8	8
9	5
10	4
11	6
12	12
13	4
14	14
15	8
16	4
17	5
18	18
19	4
20	20
21	5
22	4
23	12
24	24
25	4
26	6
27	14
28	4
29	5
30	30
31	4
32	32
33	5
34	4
35	18
36	6
37	4
38	38
39	20
40	4
41	5
42	42
43	4
44	44
45	5
46	4
47	24
48	48
49	4
50	8
51	6
52	4
53	5
54	54
55	4
56	6
57	5
58	4
59	30
60	60
61	4
62	62
63	32
64	4
65	5
66	6
67	4

[4, 5, 6, 4, 8, 5, 4, 6, 12, 4, 14, 8, 4, 5, 18, 4, 20, 5, 4, 12, 24, 4, 6, 14, 4, 5, 30, 4, 32, 5, 4, 18, 6, 4, 38, 20, 4, 5, 42, 4, 44, 5, 4, 24, 48, 4, 8, 6, 4, 5, 54, 4, 6, 5, 4, 30, 60, 4, 62, 32, 4, 5, 6, 4]

cp's OEIS Frontend

A090370 Least m > 3 such that gcd(n-1, m*n - 1) = m-1.

Table of values

List of values

n	a(n)
4	4
5	5
6	6
7	4
8	8
9	5
10	4
11	6
12	12
13	4
14	14
15	8
16	4
17	5
18	18
19	4
20	20
21	5
22	4
23	12
24	24
25	4
26	6
27	14
28	4
29	5
30	30
31	4
32	32
33	5
34	4
35	18
36	6
37	4
38	38
39	20
40	4
41	5
42	42
43	4
44	44
45	5
46	4
47	24
48	48
49	4
50	8
51	6
52	4
53	5
54	54
55	4
56	6
57	5
58	4
59	30
60	60
61	4
62	62
63	32
64	4
65	5
66	6
67	4

n	a(n)
4	4
5	5
6	6
7	4
8	8
9	5
10	4
11	6
12	12
13	4
14	14
15	8
16	4
17	5
18	18
19	4
20	20
21	5
22	4
23	12
24	24
25	4
26	6
27	14
28	4
29	5
30	30
31	4
32	32
33	5
34	4
35	18
36	6
37	4
38	38
39	20
40	4
41	5
42	42
43	4
44	44
45	5
46	4
47	24
48	48
49	4
50	8
51	6
52	4
53	5
54	54
55	4
56	6
57	5
58	4
59	30
60	60
61	4
62	62
63	32
64	4
65	5
66	6
67	4

n	a(n)
4	4
5	5
6	6
7	4
8	8
9	5
10	4
11	6
12	12
13	4
14	14
15	8
16	4
17	5
18	18
19	4
20	20
21	5
22	4
23	12
24	24
25	4
26	6
27	14
28	4
29	5
30	30
31	4
32	32
33	5
34	4
35	18
36	6
37	4
38	38
39	20
40	4
41	5
42	42
43	4
44	44
45	5
46	4
47	24
48	48
49	4
50	8
51	6
52	4
53	5
54	54
55	4
56	6
57	5
58	4
59	30
60	60
61	4
62	62
63	32
64	4
65	5
66	6
67	4