A366636 - cp's OEIS frontend

A366636 Number of distinct prime divisors of 7^n + 1.

n	a(n)
0	1
1	1
2	2
3	2
4	2
5	3
6	4
7	3
8	3
9	3
10	4
11	3
12	5
13	3
14	3
15	5
16	3
17	2
18	5
19	3
20	4
21	6
22	5
23	2
24	4
25	4
26	4
27	4
28	6
29	2
30	8
31	4
32	4
33	6
34	5
35	9
36	8
37	3
38	3
39	7
40	6
41	5
42	6
43	8
44	5
45	10
46	6
47	2
48	6
49	10
50	8
51	6
52	5
53	5
54	8
55	10
56	8
57	7
58	6
59	5
60	9
61	2
62	5
63	12
64	4
65	7
66	11
67	4
68	5
69	6
70	8
71	3
72	9
73	4
74	3
75	9
76	7
77	10
78	8
79	5
80	6
81	8
82	5
83	3
84	12

[1, 1, 2, 2, 2, 3, 4, 3, 3, 3, 4, 3, 5, 3, 3, 5, 3, 2, 5, 3, 4, 6, 5, 2, 4, 4, 4, 4, 6, 2, 8, 4, 4, 6, 5, 9, 8, 3, 3, 7, 6, 5, 6, 8, 5, 10, 6, 2, 6, 10, 8, 6, 5, 5, 8, 10, 8, 7, 6, 5, 9, 2, 5, 12, 4, 7, 11, 4, 5, 6, 8, 3, 9, 4, 3, 9, 7, 10, 8, 5, 6, 8, 5, 3, 12]

cp's OEIS Frontend

A366636 Number of distinct prime divisors of 7^n + 1.

Table of values

List of values

n	a(n)
0	1
1	1
2	2
3	2
4	2
5	3
6	4
7	3
8	3
9	3
10	4
11	3
12	5
13	3
14	3
15	5
16	3
17	2
18	5
19	3
20	4
21	6
22	5
23	2
24	4
25	4
26	4
27	4
28	6
29	2
30	8
31	4
32	4
33	6
34	5
35	9
36	8
37	3
38	3
39	7
40	6
41	5
42	6
43	8
44	5
45	10
46	6
47	2
48	6
49	10
50	8
51	6
52	5
53	5
54	8
55	10
56	8
57	7
58	6
59	5
60	9
61	2
62	5
63	12
64	4
65	7
66	11
67	4
68	5
69	6
70	8
71	3
72	9
73	4
74	3
75	9
76	7
77	10
78	8
79	5
80	6
81	8
82	5
83	3
84	12

n	a(n)
0	1
1	1
2	2
3	2
4	2
5	3
6	4
7	3
8	3
9	3
10	4
11	3
12	5
13	3
14	3
15	5
16	3
17	2
18	5
19	3
20	4
21	6
22	5
23	2
24	4
25	4
26	4
27	4
28	6
29	2
30	8
31	4
32	4
33	6
34	5
35	9
36	8
37	3
38	3
39	7
40	6
41	5
42	6
43	8
44	5
45	10
46	6
47	2
48	6
49	10
50	8
51	6
52	5
53	5
54	8
55	10
56	8
57	7
58	6
59	5
60	9
61	2
62	5
63	12
64	4
65	7
66	11
67	4
68	5
69	6
70	8
71	3
72	9
73	4
74	3
75	9
76	7
77	10
78	8
79	5
80	6
81	8
82	5
83	3
84	12

n	a(n)
0	1
1	1
2	2
3	2
4	2
5	3
6	4
7	3
8	3
9	3
10	4
11	3
12	5
13	3
14	3
15	5
16	3
17	2
18	5
19	3
20	4
21	6
22	5
23	2
24	4
25	4
26	4
27	4
28	6
29	2
30	8
31	4
32	4
33	6
34	5
35	9
36	8
37	3
38	3
39	7
40	6
41	5
42	6
43	8
44	5
45	10
46	6
47	2
48	6
49	10
50	8
51	6
52	5
53	5
54	8
55	10
56	8
57	7
58	6
59	5
60	9
61	2
62	5
63	12
64	4
65	7
66	11
67	4
68	5
69	6
70	8
71	3
72	9
73	4
74	3
75	9
76	7
77	10
78	8
79	5
80	6
81	8
82	5
83	3
84	12