A171262 - cp's OEIS frontend

A171262 Numbers n such that phi(n) = 2*phi(n+1).

n	a(n)
1	5
2	13
3	35
4	37
5	61
6	73
7	157
8	193
9	277
10	313
11	397
12	421
13	455
14	457
15	541
16	613
17	661
18	665
19	673
20	733
21	757
22	877
23	997
24	1085
25	1093
26	1153
27	1201
28	1213
29	1237
30	1295
31	1321
32	1381
33	1453
34	1621
35	1657
36	1753
37	1873
38	1933
39	1993
40	2017
41	2137
42	2169
43	2341
44	2473
45	2557
46	2593
47	2797
48	2857

[5, 13, 35, 37, 61, 73, 157, 193, 277, 313, 397, 421, 455, 457, 541, 613, 661, 665, 673, 733, 757, 877, 997, 1085, 1093, 1153, 1201, 1213, 1237, 1295, 1321, 1381, 1453, 1621, 1657, 1753, 1873, 1933, 1993, 2017, 2137, 2169, 2341, 2473, 2557, 2593, 2797, 2857]

cp's OEIS Frontend

A171262 Numbers n such that phi(n) = 2*phi(n+1).

Table of values

List of values