A058321 - cp's OEIS frontend

A058321 Number of x such that phi(x) = 2^n.

n	a(n)
0	2
1	3
2	4
3	5
4	6
5	7
6	8
7	9
8	10
9	11
10	12
11	13
12	14
13	15
14	16
15	17
16	18
17	19
18	20
19	21
20	22
21	23
22	24
23	25
24	26
25	27
26	28
27	29
28	30
29	31
30	32
31	33
32	32
33	32
34	32
35	32
36	32
37	32
38	32
39	32
40	32
41	32
42	32
43	32
44	32
45	32
46	32
47	32
48	32
49	32
50	32
51	32
52	32
53	32
54	32
55	32
56	32
57	32
58	32
59	32
60	32
61	32
62	32
63	32
64	32
65	32
66	32
67	32

[2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32]

cp's OEIS Frontend

A058321 Number of x such that phi(x) = 2^n.

Table of values

List of values

n	a(n)
0	2
1	3
2	4
3	5
4	6
5	7
6	8
7	9
8	10
9	11
10	12
11	13
12	14
13	15
14	16
15	17
16	18
17	19
18	20
19	21
20	22
21	23
22	24
23	25
24	26
25	27
26	28
27	29
28	30
29	31
30	32
31	33
32	32
33	32
34	32
35	32
36	32
37	32
38	32
39	32
40	32
41	32
42	32
43	32
44	32
45	32
46	32
47	32
48	32
49	32
50	32
51	32
52	32
53	32
54	32
55	32
56	32
57	32
58	32
59	32
60	32
61	32
62	32
63	32
64	32
65	32
66	32
67	32

n	a(n)
0	2
1	3
2	4
3	5
4	6
5	7
6	8
7	9
8	10
9	11
10	12
11	13
12	14
13	15
14	16
15	17
16	18
17	19
18	20
19	21
20	22
21	23
22	24
23	25
24	26
25	27
26	28
27	29
28	30
29	31
30	32
31	33
32	32
33	32
34	32
35	32
36	32
37	32
38	32
39	32
40	32
41	32
42	32
43	32
44	32
45	32
46	32
47	32
48	32
49	32
50	32
51	32
52	32
53	32
54	32
55	32
56	32
57	32
58	32
59	32
60	32
61	32
62	32
63	32
64	32
65	32
66	32
67	32

n	a(n)
0	2
1	3
2	4
3	5
4	6
5	7
6	8
7	9
8	10
9	11
10	12
11	13
12	14
13	15
14	16
15	17
16	18
17	19
18	20
19	21
20	22
21	23
22	24
23	25
24	26
25	27
26	28
27	29
28	30
29	31
30	32
31	33
32	32
33	32
34	32
35	32
36	32
37	32
38	32
39	32
40	32
41	32
42	32
43	32
44	32
45	32
46	32
47	32
48	32
49	32
50	32
51	32
52	32
53	32
54	32
55	32
56	32
57	32
58	32
59	32
60	32
61	32
62	32
63	32
64	32
65	32
66	32
67	32