A066263 - cp's OEIS frontend

A066263 Numbers k such that 2^k + 1 has just two distinct prime factors.

n	a(n)
1	5
2	6
3	7
4	9
5	10
6	11
7	12
8	13
9	17
10	19
11	20
12	23
13	28
14	31
15	32
16	40
17	43
18	61
19	64
20	79
21	92
22	101
23	104
24	127
25	128
26	148
27	167
28	191
29	199
30	256
31	313
32	347
33	356
34	596
35	692
36	701
37	1004
38	1228
39	1268
40	1709
41	2617
42	3539
43	3824
44	5807
45	10501
46	10691
47	11279
48	12391
49	14479
50	42737
51	83339
52	95369

[5, 6, 7, 9, 10, 11, 12, 13, 17, 19, 20, 23, 28, 31, 32, 40, 43, 61, 64, 79, 92, 101, 104, 127, 128, 148, 167, 191, 199, 256, 313, 347, 356, 596, 692, 701, 1004, 1228, 1268, 1709, 2617, 3539, 3824, 5807, 10501, 10691, 11279, 12391, 14479, 42737, 83339, 95369]

cp's OEIS Frontend

A066263 Numbers k such that 2^k + 1 has just two distinct prime factors.

Table of values

List of values