A060667 - cp's OEIS frontend

A060667 Numbers k such that phi(x) = k has exactly 4 solutions.

n	a(n)
1	4
2	6
3	18
4	42
5	100
6	162
7	184
8	208
9	328
10	424
11	460
12	468
13	486
14	492
15	616
16	636
17	664
18	688
19	700
20	712
21	784
22	820
23	900
24	904
25	1020
26	1060
27	1072
28	1168
29	1240
30	1264
31	1276
32	1288
33	1300
34	1356
35	1360
36	1384
37	1404
38	1458
39	1480
40	1528
41	1672
42	1740
43	1768
44	1864
45	1896
46	1900
47	1908
48	2008

[4, 6, 18, 42, 100, 162, 184, 208, 328, 424, 460, 468, 486, 492, 616, 636, 664, 688, 700, 712, 784, 820, 900, 904, 1020, 1060, 1072, 1168, 1240, 1264, 1276, 1288, 1300, 1356, 1360, 1384, 1404, 1458, 1480, 1528, 1672, 1740, 1768, 1864, 1896, 1900, 1908, 2008]

cp's OEIS Frontend

A060667 Numbers k such that phi(x) = k has exactly 4 solutions.

Table of values

List of values