A238574 - cp's OEIS frontend

A238574 k-Lehmer numbers: composite integers n such that phi(n) | (n-1)^k.

n	a(n)
1	15
2	51
3	85
4	91
5	133
6	247
7	255
8	259
9	435
10	451
11	481
12	511
13	561
14	595
15	679
16	703
17	763
18	771
19	949
20	1105
21	1111
22	1141
23	1261
24	1285
25	1351
26	1387
27	1417
28	1615
29	1695
30	1729
31	1843
32	1891
33	2047
34	2071
35	2091
36	2119
37	2431
38	2465
39	2509
40	2701
41	2761
42	2821
43	2955
44	3031
45	3097
46	3145
47	3277

[15, 51, 85, 91, 133, 247, 255, 259, 435, 451, 481, 511, 561, 595, 679, 703, 763, 771, 949, 1105, 1111, 1141, 1261, 1285, 1351, 1387, 1417, 1615, 1695, 1729, 1843, 1891, 2047, 2071, 2091, 2119, 2431, 2465, 2509, 2701, 2761, 2821, 2955, 3031, 3097, 3145, 3277]

cp's OEIS Frontend

A238574 k-Lehmer numbers: composite integers n such that phi(n) | (n-1)^k.

Table of values

List of values