A125954 - cp's OEIS frontend

A125954 Least number k > 0 such that ((2n+1)^k - 2^k)/(2n-1) is prime.

n	a(n)
0	2
1	2
2	3
3	2
4	2
5	3
6	2
7	2
8	11
9	2
10	5
11	11
12	2
13	2
14	5
15	71
16	2
17	3
18	2
19	2
20	167
21	2
22	17
23	3
24	2
25	197
26	149
27	2
28	2
29	3
30	3
31	2
32	2267
33	2
34	2
35	3
36	3
37	2
38	29
39	2
40	2531
41	167
42	2
43	7
44	3
45	3
46	2
47	61
48	2
49	2
50	11
51	2
52	2
53	157
54	2
55	5
56	7
57	7
58	149
59	3
60	5
61	2
62	379
63	2
64	41
65	3
66	2
67	2
68	3
69	79
70	11
71	3
72	2
73	2
74	97
75	3
76	2
77	3
78	3
79	2
80	1321
81	2
82	17
83	31
84	2
85	61

[2, 2, 3, 2, 2, 3, 2, 2, 11, 2, 5, 11, 2, 2, 5, 71, 2, 3, 2, 2, 167, 2, 17, 3, 2, 197, 149, 2, 2, 3, 3, 2, 2267, 2, 2, 3, 3, 2, 29, 2, 2531, 167, 2, 7, 3, 3, 2, 61, 2, 2, 11, 2, 2, 157, 2, 5, 7, 7, 149, 3, 5, 2, 379, 2, 41, 3, 2, 2, 3, 79, 11, 3, 2, 2, 97, 3, 2, 3, 3, 2, 1321, 2, 17, 31, 2, 61]

cp's OEIS Frontend

A125954 Least number k > 0 such that ((2n+1)^k - 2^k)/(2n-1) is prime.

Table of values

List of values