A323916 - cp's OEIS frontend

A323916 Numbers k with exactly two distinct prime divisors and such that cototient(k) is a square.

n	a(n)
1	6
2	21
3	24
4	28
5	54
6	68
7	69
8	96
9	112
10	124
11	133
12	141
13	189
14	216
15	237
16	272
17	284
18	301
19	384
20	388
21	448
22	481
23	486
24	496
25	501
26	508
27	589
28	621
29	657
30	669
31	781
32	796
33	864
34	964
35	1025
36	1029
37	1077
38	1088
39	1136
40	1141
41	1269
42	1317
43	1348
44	1357
45	1372
46	1417
47	1536
48	1537
49	1552
50	1701
51	1792
52	1796

[6, 21, 24, 28, 54, 68, 69, 96, 112, 124, 133, 141, 189, 216, 237, 272, 284, 301, 384, 388, 448, 481, 486, 496, 501, 508, 589, 621, 657, 669, 781, 796, 864, 964, 1025, 1029, 1077, 1088, 1136, 1141, 1269, 1317, 1348, 1357, 1372, 1417, 1536, 1537, 1552, 1701, 1792, 1796]

cp's OEIS Frontend

A323916 Numbers k with exactly two distinct prime divisors and such that cototient(k) is a square.

Table of values

List of values