A071414 - cp's OEIS frontend

A071414 Number of times 4n+r and 2n+r are both prime, with 0 < r < 2n.

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

[1, 1, 2, 1, 2, 2, 2, 1, 3, 1, 2, 4, 2, 2, 6, 2, 2, 7, 3, 4, 5, 3, 2, 6, 3, 3, 5, 4, 3, 8, 2, 5, 9, 5, 5, 6, 4, 3, 7, 5, 4, 10, 3, 5, 11, 6, 5, 9, 5, 7, 10, 5, 5, 5, 5, 6, 11, 3, 6, 15, 3, 6, 12, 4, 6, 11, 8, 4, 11, 9, 4, 10, 6, 6, 16, 6, 7, 16, 7, 8, 11, 6, 6, 15, 9, 8, 12, 8, 8, 13, 9, 5, 14, 7, 12]

cp's OEIS Frontend

A071414 Number of times 4n+r and 2n+r are both prime, with 0 < r < 2n.

Table of values

List of values

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

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

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