A065966 - cp's OEIS frontend

A065966 Numbers k such that phi(k) / 2 is prime.

n	a(n)
1	5
2	7
3	8
4	9
5	10
6	11
7	12
8	14
9	18
10	22
11	23
12	46
13	47
14	59
15	83
16	94
17	107
18	118
19	166
20	167
21	179
22	214
23	227
24	263
25	334
26	347
27	358
28	359
29	383
30	454
31	467
32	479
33	503
34	526
35	563
36	587
37	694
38	718
39	719
40	766
41	839
42	863
43	887
44	934
45	958
46	983
47	1006
48	1019
49	1126
50	1174
51	1187
52	1283
53	1307
54	1319

[5, 7, 8, 9, 10, 11, 12, 14, 18, 22, 23, 46, 47, 59, 83, 94, 107, 118, 166, 167, 179, 214, 227, 263, 334, 347, 358, 359, 383, 454, 467, 479, 503, 526, 563, 587, 694, 718, 719, 766, 839, 863, 887, 934, 958, 983, 1006, 1019, 1126, 1174, 1187, 1283, 1307, 1319]

cp's OEIS Frontend

A065966 Numbers k such that phi(k) / 2 is prime.

Table of values

List of values