A064122 - cp's OEIS frontend

A064122 Number of divisors of 3^n - 1 that are relatively prime to 3^m - 1 for all 0 < m < n.

n	a(n)
1	2
2	1
3	2
4	2
5	3
6	2
7	2
8	2
9	2
10	2
11	4
12	2
13	2
14	2
15	2
16	4
17	4
18	4
19	4
20	2
21	2
22	4
23	4
24	2
25	4
26	2
27	8
28	4
29	8
30	4
31	8
32	2
33	2
34	8
35	4
36	2
37	4
38	4
39	8
40	2
41	8
42	4
43	4
44	4
45	8
46	2
47	16
48	8
49	32
50	4
51	4
52	4
53	8
54	4
55	4
56	4
57	8
58	8
59	4
60	2
61	4
62	4
63	2
64	2
65	8
66	4
67	8
68	4
69	4
70	2
71	2
72	2
73	16
74	8
75	8
76	4
77	8
78	16
79	8
80	4
81	8
82	4
83	16
84	4
85	4
86	2
87	8
88	8
89	8
90	4
91	4
92	4
93	4
94	8
95	4
96	4
97	8
98	4
99	4
100	8

[2, 1, 2, 2, 3, 2, 2, 2, 2, 2, 4, 2, 2, 2, 2, 4, 4, 4, 4, 2, 2, 4, 4, 2, 4, 2, 8, 4, 8, 4, 8, 2, 2, 8, 4, 2, 4, 4, 8, 2, 8, 4, 4, 4, 8, 2, 16, 8, 32, 4, 4, 4, 8, 4, 4, 4, 8, 8, 4, 2, 4, 4, 2, 2, 8, 4, 8, 4, 4, 2, 2, 2, 16, 8, 8, 4, 8, 16, 8, 4, 8, 4, 16, 4, 4, 2, 8, 8, 8, 4, 4, 4, 4, 8, 4, 4, 8, 4, 4, 8]

cp's OEIS Frontend

A064122 Number of divisors of 3^n - 1 that are relatively prime to 3^m - 1 for all 0 < m < n.

Table of values

List of values

n	a(n)
1	2
2	1
3	2
4	2
5	3
6	2
7	2
8	2
9	2
10	2
11	4
12	2
13	2
14	2
15	2
16	4
17	4
18	4
19	4
20	2
21	2
22	4
23	4
24	2
25	4
26	2
27	8
28	4
29	8
30	4
31	8
32	2
33	2
34	8
35	4
36	2
37	4
38	4
39	8
40	2
41	8
42	4
43	4
44	4
45	8
46	2
47	16
48	8
49	32
50	4
51	4
52	4
53	8
54	4
55	4
56	4
57	8
58	8
59	4
60	2
61	4
62	4
63	2
64	2
65	8
66	4
67	8
68	4
69	4
70	2
71	2
72	2
73	16
74	8
75	8
76	4
77	8
78	16
79	8
80	4
81	8
82	4
83	16
84	4
85	4
86	2
87	8
88	8
89	8
90	4
91	4
92	4
93	4
94	8
95	4
96	4
97	8
98	4
99	4
100	8

n	a(n)
1	2
2	1
3	2
4	2
5	3
6	2
7	2
8	2
9	2
10	2
11	4
12	2
13	2
14	2
15	2
16	4
17	4
18	4
19	4
20	2
21	2
22	4
23	4
24	2
25	4
26	2
27	8
28	4
29	8
30	4
31	8
32	2
33	2
34	8
35	4
36	2
37	4
38	4
39	8
40	2
41	8
42	4
43	4
44	4
45	8
46	2
47	16
48	8
49	32
50	4
51	4
52	4
53	8
54	4
55	4
56	4
57	8
58	8
59	4
60	2
61	4
62	4
63	2
64	2
65	8
66	4
67	8
68	4
69	4
70	2
71	2
72	2
73	16
74	8
75	8
76	4
77	8
78	16
79	8
80	4
81	8
82	4
83	16
84	4
85	4
86	2
87	8
88	8
89	8
90	4
91	4
92	4
93	4
94	8
95	4
96	4
97	8
98	4
99	4
100	8

n	a(n)
1	2
2	1
3	2
4	2
5	3
6	2
7	2
8	2
9	2
10	2
11	4
12	2
13	2
14	2
15	2
16	4
17	4
18	4
19	4
20	2
21	2
22	4
23	4
24	2
25	4
26	2
27	8
28	4
29	8
30	4
31	8
32	2
33	2
34	8
35	4
36	2
37	4
38	4
39	8
40	2
41	8
42	4
43	4
44	4
45	8
46	2
47	16
48	8
49	32
50	4
51	4
52	4
53	8
54	4
55	4
56	4
57	8
58	8
59	4
60	2
61	4
62	4
63	2
64	2
65	8
66	4
67	8
68	4
69	4
70	2
71	2
72	2
73	16
74	8
75	8
76	4
77	8
78	16
79	8
80	4
81	8
82	4
83	16
84	4
85	4
86	2
87	8
88	8
89	8
90	4
91	4
92	4
93	4
94	8
95	4
96	4
97	8
98	4
99	4
100	8