A113517 - cp's OEIS frontend

A113517 Least k such that k^n-k+1 is prime, or 0 if there is no such k.

n	a(n)
2	2
3	2
4	3
5	2
6	3
7	2
8	0
9	3
10	4
11	4
12	4
13	2
14	0
15	5
16	18
17	2
18	12
19	2
20	0
21	7
22	3
23	11
24	13
25	7
26	0
27	167
28	15
29	6
30	63
31	2
32	0
33	7
34	6
35	21
36	49
37	3
38	0
39	27
40	30
41	3
42	22
43	106
44	0
45	10
46	30
47	4
48	294
49	7
50	0
51	32
52	19
53	6
54	7
55	41
56	0
57	21
58	4
59	14
60	34
61	2
62	0
63	12
64	13
65	6
66	147
67	37
68	0
69	14
70	139
71	22
72	46
73	179
74	0
75	4
76	75
77	69
78	15
79	11
80	0
81	5
82	211
83	130

[2, 2, 3, 2, 3, 2, 0, 3, 4, 4, 4, 2, 0, 5, 18, 2, 12, 2, 0, 7, 3, 11, 13, 7, 0, 167, 15, 6, 63, 2, 0, 7, 6, 21, 49, 3, 0, 27, 30, 3, 22, 106, 0, 10, 30, 4, 294, 7, 0, 32, 19, 6, 7, 41, 0, 21, 4, 14, 34, 2, 0, 12, 13, 6, 147, 37, 0, 14, 139, 22, 46, 179, 0, 4, 75, 69, 15, 11, 0, 5, 211, 130]

cp's OEIS Frontend

A113517 Least k such that k^n-k+1 is prime, or 0 if there is no such k.

Table of values

List of values

n	a(n)
2	2
3	2
4	3
5	2
6	3
7	2
8	0
9	3
10	4
11	4
12	4
13	2
14	0
15	5
16	18
17	2
18	12
19	2
20	0
21	7
22	3
23	11
24	13
25	7
26	0
27	167
28	15
29	6
30	63
31	2
32	0
33	7
34	6
35	21
36	49
37	3
38	0
39	27
40	30
41	3
42	22
43	106
44	0
45	10
46	30
47	4
48	294
49	7
50	0
51	32
52	19
53	6
54	7
55	41
56	0
57	21
58	4
59	14
60	34
61	2
62	0
63	12
64	13
65	6
66	147
67	37
68	0
69	14
70	139
71	22
72	46
73	179
74	0
75	4
76	75
77	69
78	15
79	11
80	0
81	5
82	211
83	130

n	a(n)
2	2
3	2
4	3
5	2
6	3
7	2
8	0
9	3
10	4
11	4
12	4
13	2
14	0
15	5
16	18
17	2
18	12
19	2
20	0
21	7
22	3
23	11
24	13
25	7
26	0
27	167
28	15
29	6
30	63
31	2
32	0
33	7
34	6
35	21
36	49
37	3
38	0
39	27
40	30
41	3
42	22
43	106
44	0
45	10
46	30
47	4
48	294
49	7
50	0
51	32
52	19
53	6
54	7
55	41
56	0
57	21
58	4
59	14
60	34
61	2
62	0
63	12
64	13
65	6
66	147
67	37
68	0
69	14
70	139
71	22
72	46
73	179
74	0
75	4
76	75
77	69
78	15
79	11
80	0
81	5
82	211
83	130

n	a(n)
2	2
3	2
4	3
5	2
6	3
7	2
8	0
9	3
10	4
11	4
12	4
13	2
14	0
15	5
16	18
17	2
18	12
19	2
20	0
21	7
22	3
23	11
24	13
25	7
26	0
27	167
28	15
29	6
30	63
31	2
32	0
33	7
34	6
35	21
36	49
37	3
38	0
39	27
40	30
41	3
42	22
43	106
44	0
45	10
46	30
47	4
48	294
49	7
50	0
51	32
52	19
53	6
54	7
55	41
56	0
57	21
58	4
59	14
60	34
61	2
62	0
63	12
64	13
65	6
66	147
67	37
68	0
69	14
70	139
71	22
72	46
73	179
74	0
75	4
76	75
77	69
78	15
79	11
80	0
81	5
82	211
83	130