A087011 - cp's OEIS frontend

A087011 Number of primes of form 4*k+3 between n and 2n (inclusive).

n	a(n)
1	0
2	1
3	1
4	1
5	1
6	2
7	2
8	1
9	1
10	2
11	2
12	2
13	2
14	2
15	2
16	3
17	3
18	3
19	3
20	2
21	2
22	3
23	3
24	3
25	3
26	3
27	3
28	3
29	3
30	4
31	4
32	3
33	3
34	4
35	4
36	5
37	5
38	5
39	5
40	6
41	6
42	7
43	7
44	6
45	6
46	6
47	6
48	5
49	5
50	5
51	5
52	6
53	6
54	7
55	7
56	7
57	7
58	7
59	7
60	6
61	6
62	6
63	6
64	7
65	7
66	8
67	8
68	7
69	7
70	8
71	8
72	7
73	7
74	7
75	7
76	8
77	8
78	8
79	8
80	7
81	7
82	8
83	8
84	8
85	8
86	8
87	8
88	8
89	8
90	9
91	9
92	9
93	9
94	9
95	9
96	10
97	10
98	10
99	10
100	11
101	11
102	11

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

cp's OEIS Frontend

A087011 Number of primes of form 4*k+3 between n and 2n (inclusive).

Table of values

List of values

n	a(n)
1	0
2	1
3	1
4	1
5	1
6	2
7	2
8	1
9	1
10	2
11	2
12	2
13	2
14	2
15	2
16	3
17	3
18	3
19	3
20	2
21	2
22	3
23	3
24	3
25	3
26	3
27	3
28	3
29	3
30	4
31	4
32	3
33	3
34	4
35	4
36	5
37	5
38	5
39	5
40	6
41	6
42	7
43	7
44	6
45	6
46	6
47	6
48	5
49	5
50	5
51	5
52	6
53	6
54	7
55	7
56	7
57	7
58	7
59	7
60	6
61	6
62	6
63	6
64	7
65	7
66	8
67	8
68	7
69	7
70	8
71	8
72	7
73	7
74	7
75	7
76	8
77	8
78	8
79	8
80	7
81	7
82	8
83	8
84	8
85	8
86	8
87	8
88	8
89	8
90	9
91	9
92	9
93	9
94	9
95	9
96	10
97	10
98	10
99	10
100	11
101	11
102	11

n	a(n)
1	0
2	1
3	1
4	1
5	1
6	2
7	2
8	1
9	1
10	2
11	2
12	2
13	2
14	2
15	2
16	3
17	3
18	3
19	3
20	2
21	2
22	3
23	3
24	3
25	3
26	3
27	3
28	3
29	3
30	4
31	4
32	3
33	3
34	4
35	4
36	5
37	5
38	5
39	5
40	6
41	6
42	7
43	7
44	6
45	6
46	6
47	6
48	5
49	5
50	5
51	5
52	6
53	6
54	7
55	7
56	7
57	7
58	7
59	7
60	6
61	6
62	6
63	6
64	7
65	7
66	8
67	8
68	7
69	7
70	8
71	8
72	7
73	7
74	7
75	7
76	8
77	8
78	8
79	8
80	7
81	7
82	8
83	8
84	8
85	8
86	8
87	8
88	8
89	8
90	9
91	9
92	9
93	9
94	9
95	9
96	10
97	10
98	10
99	10
100	11
101	11
102	11

n	a(n)
1	0
2	1
3	1
4	1
5	1
6	2
7	2
8	1
9	1
10	2
11	2
12	2
13	2
14	2
15	2
16	3
17	3
18	3
19	3
20	2
21	2
22	3
23	3
24	3
25	3
26	3
27	3
28	3
29	3
30	4
31	4
32	3
33	3
34	4
35	4
36	5
37	5
38	5
39	5
40	6
41	6
42	7
43	7
44	6
45	6
46	6
47	6
48	5
49	5
50	5
51	5
52	6
53	6
54	7
55	7
56	7
57	7
58	7
59	7
60	6
61	6
62	6
63	6
64	7
65	7
66	8
67	8
68	7
69	7
70	8
71	8
72	7
73	7
74	7
75	7
76	8
77	8
78	8
79	8
80	7
81	7
82	8
83	8
84	8
85	8
86	8
87	8
88	8
89	8
90	9
91	9
92	9
93	9
94	9
95	9
96	10
97	10
98	10
99	10
100	11
101	11
102	11