A074966 - cp's OEIS frontend

A074966 a(n) = least k such that n^n + k is prime.

n	a(n)
1	1
2	1
3	2
4	1
5	12
6	7
7	4
8	43
9	10
10	19
11	62
12	35
13	16
14	27
15	28
16	13
17	74
18	107
19	18
20	91
21	32
22	87
23	14
24	95
25	96
26	43
27	68
28	135
29	120
30	19
31	58
32	7
33	58
34	63
35	54
36	31
37	42
38	115
39	10
40	157
41	110
42	13
43	4
44	403
45	122
46	457
47	534
48	37
49	18
50	31
51	226
52	253
53	20
54	193
55	102
56	177
57	392
58	45
59	194
60	257
61	102
62	79
63	454
64	231
65	306

[1, 1, 2, 1, 12, 7, 4, 43, 10, 19, 62, 35, 16, 27, 28, 13, 74, 107, 18, 91, 32, 87, 14, 95, 96, 43, 68, 135, 120, 19, 58, 7, 58, 63, 54, 31, 42, 115, 10, 157, 110, 13, 4, 403, 122, 457, 534, 37, 18, 31, 226, 253, 20, 193, 102, 177, 392, 45, 194, 257, 102, 79, 454, 231, 306]

cp's OEIS Frontend

A074966 a(n) = least k such that n^n + k is prime.

Table of values

List of values

n	a(n)
1	1
2	1
3	2
4	1
5	12
6	7
7	4
8	43
9	10
10	19
11	62
12	35
13	16
14	27
15	28
16	13
17	74
18	107
19	18
20	91
21	32
22	87
23	14
24	95
25	96
26	43
27	68
28	135
29	120
30	19
31	58
32	7
33	58
34	63
35	54
36	31
37	42
38	115
39	10
40	157
41	110
42	13
43	4
44	403
45	122
46	457
47	534
48	37
49	18
50	31
51	226
52	253
53	20
54	193
55	102
56	177
57	392
58	45
59	194
60	257
61	102
62	79
63	454
64	231
65	306

n	a(n)
1	1
2	1
3	2
4	1
5	12
6	7
7	4
8	43
9	10
10	19
11	62
12	35
13	16
14	27
15	28
16	13
17	74
18	107
19	18
20	91
21	32
22	87
23	14
24	95
25	96
26	43
27	68
28	135
29	120
30	19
31	58
32	7
33	58
34	63
35	54
36	31
37	42
38	115
39	10
40	157
41	110
42	13
43	4
44	403
45	122
46	457
47	534
48	37
49	18
50	31
51	226
52	253
53	20
54	193
55	102
56	177
57	392
58	45
59	194
60	257
61	102
62	79
63	454
64	231
65	306

n	a(n)
1	1
2	1
3	2
4	1
5	12
6	7
7	4
8	43
9	10
10	19
11	62
12	35
13	16
14	27
15	28
16	13
17	74
18	107
19	18
20	91
21	32
22	87
23	14
24	95
25	96
26	43
27	68
28	135
29	120
30	19
31	58
32	7
33	58
34	63
35	54
36	31
37	42
38	115
39	10
40	157
41	110
42	13
43	4
44	403
45	122
46	457
47	534
48	37
49	18
50	31
51	226
52	253
53	20
54	193
55	102
56	177
57	392
58	45
59	194
60	257
61	102
62	79
63	454
64	231
65	306