A070804 - cp's OEIS frontend

A070804 Number of primes not exceeding phi(n).

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

[0, 0, 1, 1, 2, 1, 3, 2, 3, 2, 4, 2, 5, 3, 4, 4, 6, 3, 7, 4, 5, 4, 8, 4, 8, 5, 7, 5, 9, 4, 10, 6, 8, 6, 9, 5, 11, 7, 9, 6, 12, 5, 13, 8, 9, 8, 14, 6, 13, 8, 11, 9, 15, 7, 12, 9, 11, 9, 16, 6, 17, 10, 11, 11, 15, 8, 18, 11, 14, 9, 19, 9, 20, 11, 12, 11, 17, 9, 21, 11, 16, 12, 22, 9, 18, 13, 16]

cp's OEIS Frontend

A070804 Number of primes not exceeding phi(n).

Table of values

List of values

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

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

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