A219023 - cp's OEIS frontend

A219023 Number of primes p such that n^2-n+p and n^2+n-p are both prime.

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	1
9	1
10	1
11	0
12	2
13	0
14	1
15	1
16	0
17	0
18	2
19	1
20	0
21	2
22	0
23	0
24	0
25	2
26	1
27	1
28	0
29	2
30	1
31	0
32	2
33	3
34	0
35	2
36	2
37	0
38	1
39	4
40	1
41	2
42	1
43	0
44	0
45	3
46	1
47	1
48	3
49	0
50	0
51	1
52	2
53	1
54	1
55	1
56	1
57	0
58	0
59	2
60	3
61	1
62	0
63	3
64	1
65	2
66	1
67	0
68	1
69	4
70	0
71	1
72	2
73	0
74	2
75	3
76	0
77	0
78	4
79	0
80	2
81	2
82	0
83	1
84	3
85	2
86	1
87	4
88	1
89	1
90	3
91	3
92	2
93	3
94	1
95	2
96	1
97	0
98	2
99	4
100	2

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

cp's OEIS Frontend

A219023 Number of primes p such that n^2-n+p and n^2+n-p are both prime.

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	1
9	1
10	1
11	0
12	2
13	0
14	1
15	1
16	0
17	0
18	2
19	1
20	0
21	2
22	0
23	0
24	0
25	2
26	1
27	1
28	0
29	2
30	1
31	0
32	2
33	3
34	0
35	2
36	2
37	0
38	1
39	4
40	1
41	2
42	1
43	0
44	0
45	3
46	1
47	1
48	3
49	0
50	0
51	1
52	2
53	1
54	1
55	1
56	1
57	0
58	0
59	2
60	3
61	1
62	0
63	3
64	1
65	2
66	1
67	0
68	1
69	4
70	0
71	1
72	2
73	0
74	2
75	3
76	0
77	0
78	4
79	0
80	2
81	2
82	0
83	1
84	3
85	2
86	1
87	4
88	1
89	1
90	3
91	3
92	2
93	3
94	1
95	2
96	1
97	0
98	2
99	4
100	2

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	1
9	1
10	1
11	0
12	2
13	0
14	1
15	1
16	0
17	0
18	2
19	1
20	0
21	2
22	0
23	0
24	0
25	2
26	1
27	1
28	0
29	2
30	1
31	0
32	2
33	3
34	0
35	2
36	2
37	0
38	1
39	4
40	1
41	2
42	1
43	0
44	0
45	3
46	1
47	1
48	3
49	0
50	0
51	1
52	2
53	1
54	1
55	1
56	1
57	0
58	0
59	2
60	3
61	1
62	0
63	3
64	1
65	2
66	1
67	0
68	1
69	4
70	0
71	1
72	2
73	0
74	2
75	3
76	0
77	0
78	4
79	0
80	2
81	2
82	0
83	1
84	3
85	2
86	1
87	4
88	1
89	1
90	3
91	3
92	2
93	3
94	1
95	2
96	1
97	0
98	2
99	4
100	2

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	1
9	1
10	1
11	0
12	2
13	0
14	1
15	1
16	0
17	0
18	2
19	1
20	0
21	2
22	0
23	0
24	0
25	2
26	1
27	1
28	0
29	2
30	1
31	0
32	2
33	3
34	0
35	2
36	2
37	0
38	1
39	4
40	1
41	2
42	1
43	0
44	0
45	3
46	1
47	1
48	3
49	0
50	0
51	1
52	2
53	1
54	1
55	1
56	1
57	0
58	0
59	2
60	3
61	1
62	0
63	3
64	1
65	2
66	1
67	0
68	1
69	4
70	0
71	1
72	2
73	0
74	2
75	3
76	0
77	0
78	4
79	0
80	2
81	2
82	0
83	1
84	3
85	2
86	1
87	4
88	1
89	1
90	3
91	3
92	2
93	3
94	1
95	2
96	1
97	0
98	2
99	4
100	2