A249077 - cp's OEIS frontend

A249077 Primes of the form n^2 + k such that n^2 - k is also prime, where -n < k < n.

n	a(n)
1	3
2	5
3	7
4	11
5	13
6	19
7	31
8	41
9	61
10	67
11	73
12	79
13	83
14	89
15	97
16	103
17	137
18	139
19	149
20	151
21	157
22	181
23	193
24	199
25	211
26	223
27	227
28	239
29	241
30	271
31	311
32	317
33	331
34	337
35	349
36	373
37	421
38	433
39	439
40	443
41	449
42	461
43	607
44	619
45	631
46	643
47	661
48	691
49	719
50	739
51	757
52	811
53	823
54	829
55	853
56	859

[3, 5, 7, 11, 13, 19, 31, 41, 61, 67, 73, 79, 83, 89, 97, 103, 137, 139, 149, 151, 157, 181, 193, 199, 211, 223, 227, 239, 241, 271, 311, 317, 331, 337, 349, 373, 421, 433, 439, 443, 449, 461, 607, 619, 631, 643, 661, 691, 719, 739, 757, 811, 823, 829, 853, 859]

cp's OEIS Frontend

A249077 Primes of the form n^2 + k such that n^2 - k is also prime, where -n < k < n.

Table of values

List of values

n	a(n)
1	3
2	5
3	7
4	11
5	13
6	19
7	31
8	41
9	61
10	67
11	73
12	79
13	83
14	89
15	97
16	103
17	137
18	139
19	149
20	151
21	157
22	181
23	193
24	199
25	211
26	223
27	227
28	239
29	241
30	271
31	311
32	317
33	331
34	337
35	349
36	373
37	421
38	433
39	439
40	443
41	449
42	461
43	607
44	619
45	631
46	643
47	661
48	691
49	719
50	739
51	757
52	811
53	823
54	829
55	853
56	859

n	a(n)
1	3
2	5
3	7
4	11
5	13
6	19
7	31
8	41
9	61
10	67
11	73
12	79
13	83
14	89
15	97
16	103
17	137
18	139
19	149
20	151
21	157
22	181
23	193
24	199
25	211
26	223
27	227
28	239
29	241
30	271
31	311
32	317
33	331
34	337
35	349
36	373
37	421
38	433
39	439
40	443
41	449
42	461
43	607
44	619
45	631
46	643
47	661
48	691
49	719
50	739
51	757
52	811
53	823
54	829
55	853
56	859

n	a(n)
1	3
2	5
3	7
4	11
5	13
6	19
7	31
8	41
9	61
10	67
11	73
12	79
13	83
14	89
15	97
16	103
17	137
18	139
19	149
20	151
21	157
22	181
23	193
24	199
25	211
26	223
27	227
28	239
29	241
30	271
31	311
32	317
33	331
34	337
35	349
36	373
37	421
38	433
39	439
40	443
41	449
42	461
43	607
44	619
45	631
46	643
47	661
48	691
49	719
50	739
51	757
52	811
53	823
54	829
55	853
56	859