A284211 - cp's OEIS frontend

A284211 a(n) is the least positive integer such that n^2 + a(n)^2 and n^2 + (a(n) + 2)^2 are primes.

n	a(n)
1	2
2	1
3	8
4	9
5	2
6	29
7	8
8	3
9	14
10	1
11	4
12	23
13	8
14	9
15	2
16	29
17	8
18	5
19	14
20	1
21	44
22	13
23	18
24	59
25	4
26	9
27	20
28	13
29	4
30	11
31	4
32	3
33	188
34	9
35	16
36	149
37	28
38	13
39	44
40	1
41	44
42	23
43	8
44	19
45	14
46	19
47	8
48	35
49	4
50	17
51	14
52	3
53	10
54	59
55	4
56	9
57	50
58	3
59	24
60	29
61	24
62	43
63	38
64	9
65	2
66	89
67	18
68	5
69	194
70	17
71	14
72	5

[2, 1, 8, 9, 2, 29, 8, 3, 14, 1, 4, 23, 8, 9, 2, 29, 8, 5, 14, 1, 44, 13, 18, 59, 4, 9, 20, 13, 4, 11, 4, 3, 188, 9, 16, 149, 28, 13, 44, 1, 44, 23, 8, 19, 14, 19, 8, 35, 4, 17, 14, 3, 10, 59, 4, 9, 50, 3, 24, 29, 24, 43, 38, 9, 2, 89, 18, 5, 194, 17, 14, 5]

cp's OEIS Frontend

A284211 a(n) is the least positive integer such that n^2 + a(n)^2 and n^2 + (a(n) + 2)^2 are primes.

Table of values

List of values

n	a(n)
1	2
2	1
3	8
4	9
5	2
6	29
7	8
8	3
9	14
10	1
11	4
12	23
13	8
14	9
15	2
16	29
17	8
18	5
19	14
20	1
21	44
22	13
23	18
24	59
25	4
26	9
27	20
28	13
29	4
30	11
31	4
32	3
33	188
34	9
35	16
36	149
37	28
38	13
39	44
40	1
41	44
42	23
43	8
44	19
45	14
46	19
47	8
48	35
49	4
50	17
51	14
52	3
53	10
54	59
55	4
56	9
57	50
58	3
59	24
60	29
61	24
62	43
63	38
64	9
65	2
66	89
67	18
68	5
69	194
70	17
71	14
72	5

n	a(n)
1	2
2	1
3	8
4	9
5	2
6	29
7	8
8	3
9	14
10	1
11	4
12	23
13	8
14	9
15	2
16	29
17	8
18	5
19	14
20	1
21	44
22	13
23	18
24	59
25	4
26	9
27	20
28	13
29	4
30	11
31	4
32	3
33	188
34	9
35	16
36	149
37	28
38	13
39	44
40	1
41	44
42	23
43	8
44	19
45	14
46	19
47	8
48	35
49	4
50	17
51	14
52	3
53	10
54	59
55	4
56	9
57	50
58	3
59	24
60	29
61	24
62	43
63	38
64	9
65	2
66	89
67	18
68	5
69	194
70	17
71	14
72	5

n	a(n)
1	2
2	1
3	8
4	9
5	2
6	29
7	8
8	3
9	14
10	1
11	4
12	23
13	8
14	9
15	2
16	29
17	8
18	5
19	14
20	1
21	44
22	13
23	18
24	59
25	4
26	9
27	20
28	13
29	4
30	11
31	4
32	3
33	188
34	9
35	16
36	149
37	28
38	13
39	44
40	1
41	44
42	23
43	8
44	19
45	14
46	19
47	8
48	35
49	4
50	17
51	14
52	3
53	10
54	59
55	4
56	9
57	50
58	3
59	24
60	29
61	24
62	43
63	38
64	9
65	2
66	89
67	18
68	5
69	194
70	17
71	14
72	5