A344774 - cp's OEIS frontend

A344774 Number of divisors d of n for which A049559(d) = A049559(n), where A049559(n) = gcd(n-1, phi(n)).

n	a(n)
1	1
2	2
3	1
4	3
5	1
6	3
7	1
8	4
9	2
10	3
11	1
12	5
13	1
14	3
15	2
16	5
17	1
18	4
19	1
20	5
21	1
22	3
23	1
24	7
25	2
26	3
27	3
28	1
29	1
30	5
31	1
32	6
33	1
34	3
35	1
36	7
37	1
38	3
39	2
40	7
41	1
42	5
43	1
44	5
45	2
46	3
47	1
48	9
49	2
50	4
51	2
52	1
53	1
54	5
55	1
56	6
57	1
58	3
59	1
60	9
61	1
62	3
63	3
64	7
65	1
66	1
67	1
68	5
69	1
70	1
71	1
72	10
73	1
74	3
75	3
76	1
77	1
78	5
79	1
80	9
81	4
82	3
83	1
84	8
85	2
86	3
87	2
88	7
89	1
90	7
91	1
92	5
93	1
94	3
95	1
96	11
97	1
98	4
99	3
100	7
101	1
102	5
103	1
104	6
105	1

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

cp's OEIS Frontend

A344774 Number of divisors d of n for which A049559(d) = A049559(n), where A049559(n) = gcd(n-1, phi(n)).

Table of values

List of values

n	a(n)
1	1
2	2
3	1
4	3
5	1
6	3
7	1
8	4
9	2
10	3
11	1
12	5
13	1
14	3
15	2
16	5
17	1
18	4
19	1
20	5
21	1
22	3
23	1
24	7
25	2
26	3
27	3
28	1
29	1
30	5
31	1
32	6
33	1
34	3
35	1
36	7
37	1
38	3
39	2
40	7
41	1
42	5
43	1
44	5
45	2
46	3
47	1
48	9
49	2
50	4
51	2
52	1
53	1
54	5
55	1
56	6
57	1
58	3
59	1
60	9
61	1
62	3
63	3
64	7
65	1
66	1
67	1
68	5
69	1
70	1
71	1
72	10
73	1
74	3
75	3
76	1
77	1
78	5
79	1
80	9
81	4
82	3
83	1
84	8
85	2
86	3
87	2
88	7
89	1
90	7
91	1
92	5
93	1
94	3
95	1
96	11
97	1
98	4
99	3
100	7
101	1
102	5
103	1
104	6
105	1

n	a(n)
1	1
2	2
3	1
4	3
5	1
6	3
7	1
8	4
9	2
10	3
11	1
12	5
13	1
14	3
15	2
16	5
17	1
18	4
19	1
20	5
21	1
22	3
23	1
24	7
25	2
26	3
27	3
28	1
29	1
30	5
31	1
32	6
33	1
34	3
35	1
36	7
37	1
38	3
39	2
40	7
41	1
42	5
43	1
44	5
45	2
46	3
47	1
48	9
49	2
50	4
51	2
52	1
53	1
54	5
55	1
56	6
57	1
58	3
59	1
60	9
61	1
62	3
63	3
64	7
65	1
66	1
67	1
68	5
69	1
70	1
71	1
72	10
73	1
74	3
75	3
76	1
77	1
78	5
79	1
80	9
81	4
82	3
83	1
84	8
85	2
86	3
87	2
88	7
89	1
90	7
91	1
92	5
93	1
94	3
95	1
96	11
97	1
98	4
99	3
100	7
101	1
102	5
103	1
104	6
105	1

n	a(n)
1	1
2	2
3	1
4	3
5	1
6	3
7	1
8	4
9	2
10	3
11	1
12	5
13	1
14	3
15	2
16	5
17	1
18	4
19	1
20	5
21	1
22	3
23	1
24	7
25	2
26	3
27	3
28	1
29	1
30	5
31	1
32	6
33	1
34	3
35	1
36	7
37	1
38	3
39	2
40	7
41	1
42	5
43	1
44	5
45	2
46	3
47	1
48	9
49	2
50	4
51	2
52	1
53	1
54	5
55	1
56	6
57	1
58	3
59	1
60	9
61	1
62	3
63	3
64	7
65	1
66	1
67	1
68	5
69	1
70	1
71	1
72	10
73	1
74	3
75	3
76	1
77	1
78	5
79	1
80	9
81	4
82	3
83	1
84	8
85	2
86	3
87	2
88	7
89	1
90	7
91	1
92	5
93	1
94	3
95	1
96	11
97	1
98	4
99	3
100	7
101	1
102	5
103	1
104	6
105	1