A050475 - cp's OEIS frontend

A050475 Numbers k such that x = 2^k-2 satisfies phi(x)+2 = phi(x+2).

n	a(n)
1	3
2	4
3	6
4	8
5	14
6	18
7	20
8	32
9	62
10	90
11	108
12	128
13	522
14	608
15	1280
16	2204
17	2282
18	3218
19	4254
20	4424
21	9690
22	9942
23	11214
24	19938
25	21702
26	23210
27	44498
28	86244
29	110504
30	132050
31	216092
32	756840
33	859434
34	1257788
35	1398270
36	2976222
37	3021378
38	6972594
39	13466918
40	20996012
41	24036584
42	25964952
43	30402458
44	32582658

[3, 4, 6, 8, 14, 18, 20, 32, 62, 90, 108, 128, 522, 608, 1280, 2204, 2282, 3218, 4254, 4424, 9690, 9942, 11214, 19938, 21702, 23210, 44498, 86244, 110504, 132050, 216092, 756840, 859434, 1257788, 1398270, 2976222, 3021378, 6972594, 13466918, 20996012, 24036584, 25964952, 30402458, 32582658]

cp's OEIS Frontend

A050475 Numbers k such that x = 2^k-2 satisfies phi(x)+2 = phi(x+2).

Table of values

List of values