A084742 - cp's OEIS frontend

A084742 Least k such that (n^k+1)/(n+1) is prime, or 0 if no such prime exists.

n	a(n)
2	3
3	3
4	3
5	5
6	3
7	3
8	0
9	3
10	5
11	5
12	5
13	3
14	7
15	3
16	3
17	7
18	3
19	17
20	5
21	3
22	3
23	11
24	7
25	3
26	11
27	0
28	3
29	7
30	139
31	109
32	0
33	5
34	3
35	11
36	31
37	5
38	5
39	3
40	53
41	17
42	3
43	5
44	7
45	103
46	7
47	5
48	5
49	7
50	1153
51	3
52	7
53	21943
54	7
55	3
56	37
57	53
58	3
59	17
60	3
61	7
62	11
63	3
64	0
65	19
66	7
67	3
68	757
69	11
70	3
71	5
72	3
73	7
74	13
75	5
76	3
77	37
78	3
79	3
80	5
81	3
82	293
83	19
84	7
85	167
86	7
87	7
88	709
89	13
90	3
91	3
92	37
93	89
94	71
95	43
96	37

[3, 3, 3, 5, 3, 3, 0, 3, 5, 5, 5, 3, 7, 3, 3, 7, 3, 17, 5, 3, 3, 11, 7, 3, 11, 0, 3, 7, 139, 109, 0, 5, 3, 11, 31, 5, 5, 3, 53, 17, 3, 5, 7, 103, 7, 5, 5, 7, 1153, 3, 7, 21943, 7, 3, 37, 53, 3, 17, 3, 7, 11, 3, 0, 19, 7, 3, 757, 11, 3, 5, 3, 7, 13, 5, 3, 37, 3, 3, 5, 3, 293, 19, 7, 167, 7, 7, 709, 13, 3, 3, 37, 89, 71, 43, 37]

cp's OEIS Frontend

A084742 Least k such that (n^k+1)/(n+1) is prime, or 0 if no such prime exists.

Table of values

List of values