A366632 - cp's OEIS frontend

A366632 Number of distinct prime divisors of 7^n - 1.

n	a(n)
1	2
2	2
3	3
4	3
5	3
6	4
7	4
8	4
9	5
10	5
11	4
12	7
13	3
14	6
15	6
16	6
17	4
18	7
19	4
20	8
21	6
22	6
23	5
24	11
25	5
26	5
27	9
28	8
29	5
30	10
31	5
32	8
33	8
34	5
35	7
36	11
37	5
38	6
39	7
40	11
41	5
42	11
43	4
44	10
45	10
46	6
47	4
48	14
49	8
50	8
51	9
52	8
53	5
54	12
55	6
56	13
57	8
58	6
59	6
60	17
61	6
62	8
63	9
64	11
65	9
66	13
67	6
68	9
69	9
70	15
71	4
72	18
73	7
74	7
75	10
76	8
77	9
78	13
79	4
80	16
81	13

[2, 2, 3, 3, 3, 4, 4, 4, 5, 5, 4, 7, 3, 6, 6, 6, 4, 7, 4, 8, 6, 6, 5, 11, 5, 5, 9, 8, 5, 10, 5, 8, 8, 5, 7, 11, 5, 6, 7, 11, 5, 11, 4, 10, 10, 6, 4, 14, 8, 8, 9, 8, 5, 12, 6, 13, 8, 6, 6, 17, 6, 8, 9, 11, 9, 13, 6, 9, 9, 15, 4, 18, 7, 7, 10, 8, 9, 13, 4, 16, 13]

cp's OEIS Frontend

A366632 Number of distinct prime divisors of 7^n - 1.

Table of values

List of values

n	a(n)
1	2
2	2
3	3
4	3
5	3
6	4
7	4
8	4
9	5
10	5
11	4
12	7
13	3
14	6
15	6
16	6
17	4
18	7
19	4
20	8
21	6
22	6
23	5
24	11
25	5
26	5
27	9
28	8
29	5
30	10
31	5
32	8
33	8
34	5
35	7
36	11
37	5
38	6
39	7
40	11
41	5
42	11
43	4
44	10
45	10
46	6
47	4
48	14
49	8
50	8
51	9
52	8
53	5
54	12
55	6
56	13
57	8
58	6
59	6
60	17
61	6
62	8
63	9
64	11
65	9
66	13
67	6
68	9
69	9
70	15
71	4
72	18
73	7
74	7
75	10
76	8
77	9
78	13
79	4
80	16
81	13

n	a(n)
1	2
2	2
3	3
4	3
5	3
6	4
7	4
8	4
9	5
10	5
11	4
12	7
13	3
14	6
15	6
16	6
17	4
18	7
19	4
20	8
21	6
22	6
23	5
24	11
25	5
26	5
27	9
28	8
29	5
30	10
31	5
32	8
33	8
34	5
35	7
36	11
37	5
38	6
39	7
40	11
41	5
42	11
43	4
44	10
45	10
46	6
47	4
48	14
49	8
50	8
51	9
52	8
53	5
54	12
55	6
56	13
57	8
58	6
59	6
60	17
61	6
62	8
63	9
64	11
65	9
66	13
67	6
68	9
69	9
70	15
71	4
72	18
73	7
74	7
75	10
76	8
77	9
78	13
79	4
80	16
81	13

n	a(n)
1	2
2	2
3	3
4	3
5	3
6	4
7	4
8	4
9	5
10	5
11	4
12	7
13	3
14	6
15	6
16	6
17	4
18	7
19	4
20	8
21	6
22	6
23	5
24	11
25	5
26	5
27	9
28	8
29	5
30	10
31	5
32	8
33	8
34	5
35	7
36	11
37	5
38	6
39	7
40	11
41	5
42	11
43	4
44	10
45	10
46	6
47	4
48	14
49	8
50	8
51	9
52	8
53	5
54	12
55	6
56	13
57	8
58	6
59	6
60	17
61	6
62	8
63	9
64	11
65	9
66	13
67	6
68	9
69	9
70	15
71	4
72	18
73	7
74	7
75	10
76	8
77	9
78	13
79	4
80	16
81	13