A304903 - cp's OEIS frontend

A304903 Least prime p such that 2*n^2 - p is prime.

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

[3, 5, 3, 3, 5, 19, 19, 5, 3, 3, 5, 7, 3, 7, 3, 7, 5, 3, 3, 5, 31, 7, 23, 13, 31, 5, 19, 13, 11, 43, 19, 17, 3, 3, 13, 7, 31, 5, 13, 3, 11, 7, 19, 23, 3, 61, 5, 3, 7, 5, 61, 37, 5, 3, 3, 7, 19, 3, 7, 31, 7, 5, 13, 3, 5]

cp's OEIS Frontend

A304903 Least prime p such that 2*n^2 - p is prime.

Table of values

List of values

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

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

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