A373210 - cp's OEIS frontend

A373210 Least k such that the smallest prime >= 2^k is 2^k + 2*n + 1, or -1 if no such k exists.

n	a(n)
0	0
1	3
2	5
3	10
4	9
5	29
6	64
7	22
8	13
9	162
10	19
11	39
12	34
13	14
14	17
15	36
16	60
17	25
18	74
19	87
20	121
21	24
22	151
23	209
24	170
25	111
26	35
27	50
28	188
29	45
30	96
31	247
32	193
33	124
34	49
35	115
36	258
37	83
38	173
39	254
40	56
41	167
42	136
43	138
44	279
45	148
46	314
47	153
48	158
49	106
50	199
51	434
52	93
53	161
54	6954
55	104
56	719
57	240
58	164

[0, 3, 5, 10, 9, 29, 64, 22, 13, 162, 19, 39, 34, 14, 17, 36, 60, 25, 74, 87, 121, 24, 151, 209, 170, 111, 35, 50, 188, 45, 96, 247, 193, 124, 49, 115, 258, 83, 173, 254, 56, 167, 136, 138, 279, 148, 314, 153, 158, 106, 199, 434, 93, 161, 6954, 104, 719, 240, 164]

cp's OEIS Frontend

A373210 Least k such that the smallest prime >= 2^k is 2^k + 2*n + 1, or -1 if no such k exists.

Table of values

List of values