A367176 - cp's OEIS frontend

A367176 Numbers k, such that (Sum_{d|k} (-1)^[d is prime] * d) is prime.

n	a(n)
1	4
2	6
3	8
4	9
5	18
6	32
7	49
8	50
9	128
10	162
11	169
12	242
13	288
14	400
15	512
16	578
17	729
18	900
19	1058
20	1156
21	1521
22	1600
23	1682
24	2048
25	2116
26	2312
27	2450
28	3025
29	3249
30	3600
31	3872
32	4356
33	4418
34	4489
35	4624
36	5000
37	6241
38	6728
39	6962
40	7225
41	8100
42	8281
43	8450
44	8464
45	8649
46	8712
47	10000

[4, 6, 8, 9, 18, 32, 49, 50, 128, 162, 169, 242, 288, 400, 512, 578, 729, 900, 1058, 1156, 1521, 1600, 1682, 2048, 2116, 2312, 2450, 3025, 3249, 3600, 3872, 4356, 4418, 4489, 4624, 5000, 6241, 6728, 6962, 7225, 8100, 8281, 8450, 8464, 8649, 8712, 10000]

cp's OEIS Frontend

A367176 Numbers k, such that (Sum_{d|k} (-1)^[d is prime] * d) is prime.

Table of values

List of values