A289497 - cp's OEIS frontend

A289497 Number of primes in the interval [6n, 7n].

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

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

cp's OEIS Frontend

A289497 Number of primes in the interval [6n, 7n].

Table of values

List of values

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

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

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