A064128 - cp's OEIS frontend

A064128 Number of divisors of 6^n - 1 that are relatively prime to 6^m - 1 for all 0 < m < n.

n	a(n)
1	2
2	2
3	2
4	2
5	2
6	2
7	2
8	2
9	4
10	4
11	4
12	4
13	4
14	4
15	4
16	4
17	16
18	2
19	4
20	4
21	2
22	2
23	16
24	2
25	4
26	8
27	4
28	4
29	2
30	2
31	4
32	8
33	4
34	4
35	8
36	8
37	32
38	4
39	4
40	4
41	4
42	2
43	16
44	8
45	8
46	4
47	8
48	4
49	8
50	2
51	8
52	8
53	8
54	4
55	4
56	16
57	8
58	8
59	8
60	16
61	8
62	2
63	16
64	8
65	16
66	8
67	4
68	4
69	4
70	32
71	2
72	8
73	16
74	8
75	8
76	4
77	4
78	16
79	8
80	8
81	4
82	8
83	128

[2, 2, 2, 2, 2, 2, 2, 2, 4, 4, 4, 4, 4, 4, 4, 4, 16, 2, 4, 4, 2, 2, 16, 2, 4, 8, 4, 4, 2, 2, 4, 8, 4, 4, 8, 8, 32, 4, 4, 4, 4, 2, 16, 8, 8, 4, 8, 4, 8, 2, 8, 8, 8, 4, 4, 16, 8, 8, 8, 16, 8, 2, 16, 8, 16, 8, 4, 4, 4, 32, 2, 8, 16, 8, 8, 4, 4, 16, 8, 8, 4, 8, 128]

cp's OEIS Frontend

A064128 Number of divisors of 6^n - 1 that are relatively prime to 6^m - 1 for all 0 < m < n.

Table of values

List of values

n	a(n)
1	2
2	2
3	2
4	2
5	2
6	2
7	2
8	2
9	4
10	4
11	4
12	4
13	4
14	4
15	4
16	4
17	16
18	2
19	4
20	4
21	2
22	2
23	16
24	2
25	4
26	8
27	4
28	4
29	2
30	2
31	4
32	8
33	4
34	4
35	8
36	8
37	32
38	4
39	4
40	4
41	4
42	2
43	16
44	8
45	8
46	4
47	8
48	4
49	8
50	2
51	8
52	8
53	8
54	4
55	4
56	16
57	8
58	8
59	8
60	16
61	8
62	2
63	16
64	8
65	16
66	8
67	4
68	4
69	4
70	32
71	2
72	8
73	16
74	8
75	8
76	4
77	4
78	16
79	8
80	8
81	4
82	8
83	128

n	a(n)
1	2
2	2
3	2
4	2
5	2
6	2
7	2
8	2
9	4
10	4
11	4
12	4
13	4
14	4
15	4
16	4
17	16
18	2
19	4
20	4
21	2
22	2
23	16
24	2
25	4
26	8
27	4
28	4
29	2
30	2
31	4
32	8
33	4
34	4
35	8
36	8
37	32
38	4
39	4
40	4
41	4
42	2
43	16
44	8
45	8
46	4
47	8
48	4
49	8
50	2
51	8
52	8
53	8
54	4
55	4
56	16
57	8
58	8
59	8
60	16
61	8
62	2
63	16
64	8
65	16
66	8
67	4
68	4
69	4
70	32
71	2
72	8
73	16
74	8
75	8
76	4
77	4
78	16
79	8
80	8
81	4
82	8
83	128

n	a(n)
1	2
2	2
3	2
4	2
5	2
6	2
7	2
8	2
9	4
10	4
11	4
12	4
13	4
14	4
15	4
16	4
17	16
18	2
19	4
20	4
21	2
22	2
23	16
24	2
25	4
26	8
27	4
28	4
29	2
30	2
31	4
32	8
33	4
34	4
35	8
36	8
37	32
38	4
39	4
40	4
41	4
42	2
43	16
44	8
45	8
46	4
47	8
48	4
49	8
50	2
51	8
52	8
53	8
54	4
55	4
56	16
57	8
58	8
59	8
60	16
61	8
62	2
63	16
64	8
65	16
66	8
67	4
68	4
69	4
70	32
71	2
72	8
73	16
74	8
75	8
76	4
77	4
78	16
79	8
80	8
81	4
82	8
83	128