A332086 - cp's OEIS frontend

A332086 a(n) = pi(prime(n) + n) - n, where pi is the prime counting function.

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

[1, 1, 1, 1, 1, 2, 2, 1, 2, 2, 2, 3, 3, 2, 3, 3, 4, 4, 4, 4, 3, 4, 4, 6, 5, 5, 4, 4, 4, 4, 6, 6, 6, 6, 7, 6, 7, 8, 7, 7, 6, 6, 8, 7, 8, 7, 8, 10, 9, 9, 10, 9, 9, 8, 9, 10, 9, 8, 8, 8, 7, 9, 10, 10, 9, 10, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 13]

cp's OEIS Frontend

A332086 a(n) = pi(prime(n) + n) - n, where pi is the prime counting function.

Table of values

List of values

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

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

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