A289500 - cp's OEIS frontend

A289500 Number of primes in the interval [9n, 10n].

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

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

cp's OEIS Frontend

A289500 Number of primes in the interval [9n, 10n].

Table of values

List of values

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

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

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