A366620 - cp's OEIS frontend

A366620 Number of distinct prime divisors of 6^n - 1.

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

[1, 2, 2, 3, 2, 4, 2, 4, 4, 5, 3, 7, 3, 5, 5, 6, 5, 7, 3, 8, 4, 5, 5, 9, 4, 7, 6, 8, 2, 10, 3, 9, 6, 8, 6, 13, 6, 6, 6, 11, 3, 9, 5, 9, 10, 8, 4, 13, 5, 8, 9, 11, 4, 11, 6, 13, 7, 6, 4, 19, 4, 5, 10, 12, 8, 12, 3, 11, 8, 16, 2, 18, 5, 10, 10, 9, 6, 15, 4, 16, 8]

cp's OEIS Frontend

A366620 Number of distinct prime divisors of 6^n - 1.

Table of values

List of values

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

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

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