A092559 - cp's OEIS frontend

A092559 Numbers k such that 2^k + 1 is a semiprime.

n	a(n)
1	3
2	5
3	6
4	7
5	11
6	12
7	13
8	17
9	19
10	20
11	23
12	28
13	31
14	32
15	40
16	43
17	61
18	64
19	79
20	92
21	101
22	104
23	127
24	128
25	148
26	167
27	191
28	199
29	256
30	313
31	347
32	356
33	596
34	692
35	701
36	1004
37	1228
38	1268
39	1709
40	2617
41	3539
42	3824
43	5807
44	10501
45	10691
46	11279
47	12391
48	14479
49	42737
50	83339
51	95369
52	117239

[3, 5, 6, 7, 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, 117239]

cp's OEIS Frontend

A092559 Numbers k such that 2^k + 1 is a semiprime.

Table of values

List of values