A224965 - cp's OEIS frontend

A224965 Let p = prime(n). a(n) = number of primes q less than p, such that both pq+p+q and pq-p-q are primes.

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

[0, 0, 2, 3, 1, 2, 2, 2, 1, 2, 1, 1, 3, 2, 1, 1, 1, 3, 2, 2, 1, 3, 1, 0, 4, 0, 1, 2, 5, 0, 2, 2, 1, 2, 2, 2, 1, 2, 2, 1, 1, 4, 2, 1, 0, 2, 5, 1, 1, 3, 1, 3, 3, 3, 0, 1, 2, 4, 1, 4, 4, 2, 2, 2, 6, 2, 5, 2, 3, 3, 2, 4, 5, 3, 2, 1, 3, 1, 3, 3, 3, 2, 2, 3, 2]

cp's OEIS Frontend

A224965 Let p = prime(n). a(n) = number of primes q less than p, such that both pq+p+q and pq-p-q are primes.

Table of values

List of values

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

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

cp's OEIS Frontend

A224965 Let p = prime(n). a(n) = number of primes q less than p, such that both p*q+p+q and p*q-p-q are primes.

Table of values

List of values

A224965 Let p = prime(n). a(n) = number of primes q less than p, such that both pq+p+q and pq-p-q are primes.

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