A058339 - cp's OEIS frontend

A058339 Number of solutions to 1 + phi(x) = prime(n), where phi is A000010.

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

[2, 3, 4, 4, 2, 6, 6, 4, 2, 2, 2, 8, 9, 4, 2, 2, 2, 9, 2, 2, 17, 2, 2, 6, 17, 4, 2, 2, 9, 6, 2, 2, 2, 2, 2, 2, 7, 4, 2, 2, 2, 10, 2, 21, 2, 2, 2, 2, 2, 2, 6, 2, 31, 2, 10, 2, 2, 2, 9, 8, 2, 2, 2, 2, 16, 2, 2, 18, 2, 6, 12, 2, 2, 2, 2, 2, 2, 13, 13, 6, 2, 13, 2, 34]

cp's OEIS Frontend

A058339 Number of solutions to 1 + phi(x) = prime(n), where phi is A000010.

Table of values

List of values

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

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

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