A289499 - cp's OEIS frontend

A289499 Number of primes in the interval [8n, 9n].

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

[0, 1, 0, 0, 2, 1, 2, 2, 2, 2, 2, 4, 3, 1, 2, 3, 4, 3, 3, 4, 3, 5, 4, 4, 2, 5, 6, 6, 5, 5, 6, 7, 6, 4, 6, 5, 5, 6, 6, 6, 7, 7, 8, 7, 7, 7, 8, 7, 8, 9, 9, 11, 9, 9, 9, 10, 10, 8, 8, 7, 8, 8, 7, 8, 9, 9, 11, 11, 13, 12, 12, 13, 13, 14, 13, 13, 13, 12, 12, 13]

cp's OEIS Frontend

A289499 Number of primes in the interval [8n, 9n].

Table of values

List of values

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

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

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