A356864 - cp's OEIS frontend

A356864 a(n) is the number of primes p < n such that 2n-p and p(2n-p)+2n are also prime.

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

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

cp's OEIS Frontend

A356864 a(n) is the number of primes p < n such that 2n-p and p(2n-p)+2n are also prime.

Table of values

List of values

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

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

cp's OEIS Frontend

A356864 a(n) is the number of primes p < n such that 2*n-p and p*(2*n-p)+2*n are also prime.

Table of values

List of values

A356864 a(n) is the number of primes p < n such that 2n-p and p(2n-p)+2n are also prime.

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