A239666 - cp's OEIS frontend

A239666 a(n) = least number k such that n*k^n+1 is prime, or 0 if no such number exists.

n	a(n)
1	1
2	1
3	4
4	1
5	8
6	1
7	4
8	3
9	10
10	1
11	42
12	1
13	60
14	15
15	22
16	1
17	8
18	1
19	198
20	42
21	10
22	1
23	8
24	115
25	34
26	21
27	0
28	1
29	54
30	1
31	130
32	3
33	4
34	7
35	72
36	1
37	778
38	204
39	30
40	1
41	108
42	1
43	178
44	15
45	14
46	1
47	924
48	28
49	234
50	63
51	1376
52	1
53	44
54	3
55	16
56	27
57	256
58	1
59	180
60	1
61	706
62	51
63	98
64	0
65	546
66	1
67	4
68	153
69	150
70	1
71	170

[1, 1, 4, 1, 8, 1, 4, 3, 10, 1, 42, 1, 60, 15, 22, 1, 8, 1, 198, 42, 10, 1, 8, 115, 34, 21, 0, 1, 54, 1, 130, 3, 4, 7, 72, 1, 778, 204, 30, 1, 108, 1, 178, 15, 14, 1, 924, 28, 234, 63, 1376, 1, 44, 3, 16, 27, 256, 1, 180, 1, 706, 51, 98, 0, 546, 1, 4, 153, 150, 1, 170]

cp's OEIS Frontend

A239666 a(n) = least number k such that n*k^n+1 is prime, or 0 if no such number exists.

Table of values

List of values