A224962 - cp's OEIS frontend

A224962 a(n) = number of primes of the form p*q+(p+q) where p = prime(n) and q is any prime < p.

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

[0, 1, 2, 3, 2, 3, 4, 4, 4, 7, 3, 5, 6, 4, 7, 6, 8, 4, 5, 6, 2, 6, 10, 11, 8, 8, 5, 7, 10, 8, 5, 11, 8, 9, 14, 6, 6, 7, 11, 11, 14, 9, 12, 6, 13, 9, 10, 7, 16, 11, 11, 22, 9, 16, 17, 17, 21, 9, 4, 11, 6, 21, 10, 14, 13, 22, 10, 12, 21, 15, 20, 22, 13, 11, 12]

cp's OEIS Frontend

A224962 a(n) = number of primes of the form p*q+(p+q) where p = prime(n) and q is any prime < p.

Table of values

List of values

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

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

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