A270427 - cp's OEIS frontend

A270427 Numbers k such that k*floor(2^k/k) + 1 is prime.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	10
10	12
11	13
12	14
13	16
14	17
15	19
16	22
17	31
18	39
19	61
20	76
21	89
22	94
23	102
24	107
25	122
26	127
27	130
28	338
29	521
30	607
31	639
32	694
33	1279
34	1352
35	1593
36	1983
37	2061
38	2203
39	2281
40	2319
41	2410
42	2646
43	3217
44	4253
45	4423
46	6345
47	7707
48	9689
49	9941
50	11213
51	12819
52	13175
53	14114
54	14415
55	15293
56	19937
57	21701
58	22839
59	23209
60	32925
61	44497

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 16, 17, 19, 22, 31, 39, 61, 76, 89, 94, 102, 107, 122, 127, 130, 338, 521, 607, 639, 694, 1279, 1352, 1593, 1983, 2061, 2203, 2281, 2319, 2410, 2646, 3217, 4253, 4423, 6345, 7707, 9689, 9941, 11213, 12819, 13175, 14114, 14415, 15293, 19937, 21701, 22839, 23209, 32925, 44497]

cp's OEIS Frontend

A270427 Numbers k such that k*floor(2^k/k) + 1 is prime.

Table of values

List of values