A217864 - cp's OEIS frontend

A217864 Number of prime numbers between floor(nlog(n)) and (n + 1)log(n + 1).

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

[0, 2, 2, 2, 0, 2, 1, 2, 2, 1, 1, 2, 0, 1, 2, 1, 0, 1, 1, 2, 1, 1, 1, 1, 1, 0, 1, 1, 2, 1, 2, 1, 0, 0, 1, 1, 1, 1, 0, 2, 0, 1, 1, 1, 1, 1, 1, 0, 2, 2, 0, 0, 1, 0, 1, 2, 1, 1, 1, 0, 1, 1, 1, 2, 1, 2, 2, 0, 1, 0, 1, 3, 2, 0, 0, 1, 1, 0, 2, 1, 1, 0, 1, 1, 2, 1, 1]

cp's OEIS Frontend

A217864 Number of prime numbers between floor(nlog(n)) and (n + 1)log(n + 1).

Table of values

List of values

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

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

cp's OEIS Frontend

A217864 Number of prime numbers between floor(n*log(n)) and (n + 1)*log(n + 1).

Table of values

List of values

A217864 Number of prime numbers between floor(nlog(n)) and (n + 1)log(n + 1).

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