A306647 - cp's OEIS frontend

A306647 Numbers k such that 2*k^A006530(k) + 1 is prime.

n	a(n)
1	1
2	6
3	9
4	12
5	14
6	21
7	27
8	30
9	72
10	92
11	96
12	126
13	150
14	162
15	165
16	192
17	225
18	242
19	251
20	261
21	341
22	345
23	384
24	392
25	420
26	455
27	462
28	500
29	540
30	629
31	684
32	704
33	779
34	800
35	825
36	990
37	1350
38	1386
39	1404
40	1482
41	1512
42	1625
43	1725
44	1808
45	2001
46	2028
47	2115
48	2184
49	2322
50	2499
51	2835

[1, 6, 9, 12, 14, 21, 27, 30, 72, 92, 96, 126, 150, 162, 165, 192, 225, 242, 251, 261, 341, 345, 384, 392, 420, 455, 462, 500, 540, 629, 684, 704, 779, 800, 825, 990, 1350, 1386, 1404, 1482, 1512, 1625, 1725, 1808, 2001, 2028, 2115, 2184, 2322, 2499, 2835]

cp's OEIS Frontend

A306647 Numbers k such that 2*k^A006530(k) + 1 is prime.

Table of values

List of values