A158979 - cp's OEIS frontend

A158979 a(n) is the smallest number > n such that n^4 + a(n)^4 is prime.

n	a(n)
1	2
2	3
3	4
4	5
5	8
6	7
7	10
8	9
9	10
10	13
11	16
12	13
13	14
14	15
15	22
16	17
17	20
18	23
19	24
20	29
21	38
22	29
23	26
24	41
25	26
26	27
27	28
28	33
29	34
30	37
31	32
32	37
33	34
34	35
35	52
36	37
37	38
38	39
39	46
40	41
41	50
42	53
43	44
44	47
45	58
46	55
47	50
48	49
49	60
50	61
51	62
52	61
53	56
54	55
55	58
56	59
57	68
58	61
59	62
60	73
61	66
62	77
63	64
64	67
65	84
66	71

[2, 3, 4, 5, 8, 7, 10, 9, 10, 13, 16, 13, 14, 15, 22, 17, 20, 23, 24, 29, 38, 29, 26, 41, 26, 27, 28, 33, 34, 37, 32, 37, 34, 35, 52, 37, 38, 39, 46, 41, 50, 53, 44, 47, 58, 55, 50, 49, 60, 61, 62, 61, 56, 55, 58, 59, 68, 61, 62, 73, 66, 77, 64, 67, 84, 71]

cp's OEIS Frontend

A158979 a(n) is the smallest number > n such that n^4 + a(n)^4 is prime.

Table of values

List of values

n	a(n)
1	2
2	3
3	4
4	5
5	8
6	7
7	10
8	9
9	10
10	13
11	16
12	13
13	14
14	15
15	22
16	17
17	20
18	23
19	24
20	29
21	38
22	29
23	26
24	41
25	26
26	27
27	28
28	33
29	34
30	37
31	32
32	37
33	34
34	35
35	52
36	37
37	38
38	39
39	46
40	41
41	50
42	53
43	44
44	47
45	58
46	55
47	50
48	49
49	60
50	61
51	62
52	61
53	56
54	55
55	58
56	59
57	68
58	61
59	62
60	73
61	66
62	77
63	64
64	67
65	84
66	71

n	a(n)
1	2
2	3
3	4
4	5
5	8
6	7
7	10
8	9
9	10
10	13
11	16
12	13
13	14
14	15
15	22
16	17
17	20
18	23
19	24
20	29
21	38
22	29
23	26
24	41
25	26
26	27
27	28
28	33
29	34
30	37
31	32
32	37
33	34
34	35
35	52
36	37
37	38
38	39
39	46
40	41
41	50
42	53
43	44
44	47
45	58
46	55
47	50
48	49
49	60
50	61
51	62
52	61
53	56
54	55
55	58
56	59
57	68
58	61
59	62
60	73
61	66
62	77
63	64
64	67
65	84
66	71

n	a(n)
1	2
2	3
3	4
4	5
5	8
6	7
7	10
8	9
9	10
10	13
11	16
12	13
13	14
14	15
15	22
16	17
17	20
18	23
19	24
20	29
21	38
22	29
23	26
24	41
25	26
26	27
27	28
28	33
29	34
30	37
31	32
32	37
33	34
34	35
35	52
36	37
37	38
38	39
39	46
40	41
41	50
42	53
43	44
44	47
45	58
46	55
47	50
48	49
49	60
50	61
51	62
52	61
53	56
54	55
55	58
56	59
57	68
58	61
59	62
60	73
61	66
62	77
63	64
64	67
65	84
66	71