A333314 - cp's OEIS frontend

A333314 Composite non-Carmichael numbers k such that rad(phi(k)) divides k-1, where rad(k) is the squarefree kernel of k (A007947) and phi is the Euler totient function (A000010).

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	595
14	679
15	703
16	763
17	771
18	949
19	1111
20	1141
21	1261
22	1285
23	1351
24	1387
25	1417
26	1615
27	1695
28	1843
29	1891
30	2047
31	2071
32	2091
33	2119
34	2431
35	2509
36	2701
37	2761
38	2955
39	3031
40	3097
41	3145
42	3277
43	3367
44	3409
45	3589
46	3655
47	3667

[15, 51, 85, 91, 133, 247, 255, 259, 435, 451, 481, 511, 595, 679, 703, 763, 771, 949, 1111, 1141, 1261, 1285, 1351, 1387, 1417, 1615, 1695, 1843, 1891, 2047, 2071, 2091, 2119, 2431, 2509, 2701, 2761, 2955, 3031, 3097, 3145, 3277, 3367, 3409, 3589, 3655, 3667]

cp's OEIS Frontend

A333314 Composite non-Carmichael numbers k such that rad(phi(k)) divides k-1, where rad(k) is the squarefree kernel of k (A007947) and phi is the Euler totient function (A000010).

Table of values

List of values