A069932 - cp's OEIS frontend

A069932 Number of k, 1<=k<=n, such that phi(k) divides n.

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

[1, 2, 2, 4, 2, 5, 2, 7, 2, 5, 2, 11, 2, 5, 2, 11, 2, 9, 2, 10, 2, 5, 2, 19, 2, 5, 2, 9, 2, 11, 2, 16, 2, 5, 2, 20, 2, 5, 2, 18, 2, 9, 2, 10, 2, 5, 2, 32, 2, 7, 2, 9, 2, 13, 2, 15, 2, 5, 2, 26, 2, 5, 2, 22, 2, 11, 2, 9, 2, 7, 2, 38, 2, 5, 2, 9, 2, 9, 2, 30, 2, 5, 2, 23, 2, 5, 2, 17, 2, 17, 2, 10, 2, 5]

cp's OEIS Frontend

A069932 Number of k, 1<=k<=n, such that phi(k) divides n.

Table of values

List of values

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

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

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