A224908 - cp's OEIS frontend

A224908 Given n-th prime p, a(n)=number of primes of the form p+q+1 where q is any prime < p.

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

[0, 0, 0, 2, 2, 2, 3, 3, 5, 5, 3, 4, 7, 4, 7, 8, 11, 5, 6, 9, 4, 7, 12, 14, 8, 11, 7, 13, 10, 12, 9, 15, 15, 12, 19, 9, 8, 8, 20, 19, 24, 11, 16, 11, 18, 15, 9, 13, 21, 14, 24, 27, 11, 26, 24, 26, 32, 13, 12, 21, 14, 28, 19, 27, 14, 26, 14, 14, 29, 24, 26, 39]

cp's OEIS Frontend

A224908 Given n-th prime p, a(n)=number of primes of the form p+q+1 where q is any prime < p.

Table of values

List of values

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

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

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