A014197 - cp's OEIS frontend

A014197 Number of numbers m with Euler phi(m) = n.

n	a(n)
1	2
2	3
3	0
4	4
5	0
6	4
7	0
8	5
9	0
10	2
11	0
12	6
13	0
14	0
15	0
16	6
17	0
18	4
19	0
20	5
21	0
22	2
23	0
24	10
25	0
26	0
27	0
28	2
29	0
30	2
31	0
32	7
33	0
34	0
35	0
36	8
37	0
38	0
39	0
40	9
41	0
42	4
43	0
44	3
45	0
46	2
47	0
48	11
49	0
50	0
51	0
52	2
53	0
54	2
55	0
56	3
57	0
58	2
59	0
60	9
61	0
62	0
63	0
64	8
65	0
66	2
67	0
68	0
69	0
70	2
71	0
72	17
73	0
74	0
75	0
76	0
77	0
78	2
79	0
80	10
81	0
82	2
83	0
84	6
85	0
86	0
87	0
88	6
89	0
90	0
91	0
92	3

[2, 3, 0, 4, 0, 4, 0, 5, 0, 2, 0, 6, 0, 0, 0, 6, 0, 4, 0, 5, 0, 2, 0, 10, 0, 0, 0, 2, 0, 2, 0, 7, 0, 0, 0, 8, 0, 0, 0, 9, 0, 4, 0, 3, 0, 2, 0, 11, 0, 0, 0, 2, 0, 2, 0, 3, 0, 2, 0, 9, 0, 0, 0, 8, 0, 2, 0, 0, 0, 2, 0, 17, 0, 0, 0, 0, 0, 2, 0, 10, 0, 2, 0, 6, 0, 0, 0, 6, 0, 0, 0, 3]

cp's OEIS Frontend

A014197 Number of numbers m with Euler phi(m) = n.

Table of values

List of values

n	a(n)
1	2
2	3
3	0
4	4
5	0
6	4
7	0
8	5
9	0
10	2
11	0
12	6
13	0
14	0
15	0
16	6
17	0
18	4
19	0
20	5
21	0
22	2
23	0
24	10
25	0
26	0
27	0
28	2
29	0
30	2
31	0
32	7
33	0
34	0
35	0
36	8
37	0
38	0
39	0
40	9
41	0
42	4
43	0
44	3
45	0
46	2
47	0
48	11
49	0
50	0
51	0
52	2
53	0
54	2
55	0
56	3
57	0
58	2
59	0
60	9
61	0
62	0
63	0
64	8
65	0
66	2
67	0
68	0
69	0
70	2
71	0
72	17
73	0
74	0
75	0
76	0
77	0
78	2
79	0
80	10
81	0
82	2
83	0
84	6
85	0
86	0
87	0
88	6
89	0
90	0
91	0
92	3

n	a(n)
1	2
2	3
3	0
4	4
5	0
6	4
7	0
8	5
9	0
10	2
11	0
12	6
13	0
14	0
15	0
16	6
17	0
18	4
19	0
20	5
21	0
22	2
23	0
24	10
25	0
26	0
27	0
28	2
29	0
30	2
31	0
32	7
33	0
34	0
35	0
36	8
37	0
38	0
39	0
40	9
41	0
42	4
43	0
44	3
45	0
46	2
47	0
48	11
49	0
50	0
51	0
52	2
53	0
54	2
55	0
56	3
57	0
58	2
59	0
60	9
61	0
62	0
63	0
64	8
65	0
66	2
67	0
68	0
69	0
70	2
71	0
72	17
73	0
74	0
75	0
76	0
77	0
78	2
79	0
80	10
81	0
82	2
83	0
84	6
85	0
86	0
87	0
88	6
89	0
90	0
91	0
92	3

n	a(n)
1	2
2	3
3	0
4	4
5	0
6	4
7	0
8	5
9	0
10	2
11	0
12	6
13	0
14	0
15	0
16	6
17	0
18	4
19	0
20	5
21	0
22	2
23	0
24	10
25	0
26	0
27	0
28	2
29	0
30	2
31	0
32	7
33	0
34	0
35	0
36	8
37	0
38	0
39	0
40	9
41	0
42	4
43	0
44	3
45	0
46	2
47	0
48	11
49	0
50	0
51	0
52	2
53	0
54	2
55	0
56	3
57	0
58	2
59	0
60	9
61	0
62	0
63	0
64	8
65	0
66	2
67	0
68	0
69	0
70	2
71	0
72	17
73	0
74	0
75	0
76	0
77	0
78	2
79	0
80	10
81	0
82	2
83	0
84	6
85	0
86	0
87	0
88	6
89	0
90	0
91	0
92	3