A280083 - cp's OEIS frontend

A280083 Numbers k such that (2^k + 1)/(2 - (-1)^k) is a prime.

n	a(n)
1	0
2	2
3	3
4	4
5	5
6	7
7	8
8	11
9	13
10	16
11	17
12	19
13	23
14	31
15	43
16	61
17	79
18	101
19	127
20	167
21	191
22	199
23	313
24	347
25	701
26	1709
27	2617
28	3539
29	5807
30	10501
31	10691
32	11279
33	12391
34	14479
35	42737
36	83339
37	95369
38	117239
39	127031
40	138937
41	141079
42	267017
43	269987
44	374321
45	986191
46	4031399

[0, 2, 3, 4, 5, 7, 8, 11, 13, 16, 17, 19, 23, 31, 43, 61, 79, 101, 127, 167, 191, 199, 313, 347, 701, 1709, 2617, 3539, 5807, 10501, 10691, 11279, 12391, 14479, 42737, 83339, 95369, 117239, 127031, 138937, 141079, 267017, 269987, 374321, 986191, 4031399]

cp's OEIS Frontend

A280083 Numbers k such that (2^k + 1)/(2 - (-1)^k) is a prime.

Table of values

List of values