A342418 - cp's OEIS frontend

A342418 Composite numbers k such that Euler totient phi(k) is a multiple of the arithmetic derivative of k.

n	a(n)
1	9
2	15
3	25
4	35
5	49
6	95
7	119
8	121
9	143
10	169
11	209
12	287
13	289
14	319
15	323
16	343
17	361
18	377
19	527
20	529
21	559
22	625
23	779
24	841
25	899
26	923
27	961
28	989
29	1007
30	1189
31	1199
32	1225
33	1343
34	1349
35	1369
36	1681
37	1763
38	1849
39	1919
40	2159
41	2197
42	2209
43	2507
44	2759
45	2809
46	2911
47	3239
48	3481
49	3599
50	3721
51	3827
52	3993
53	4031
54	4489
55	4607
56	5041
57	5183
58	5207
59	5249

[9, 15, 25, 35, 49, 95, 119, 121, 143, 169, 209, 287, 289, 319, 323, 343, 361, 377, 527, 529, 559, 625, 779, 841, 899, 923, 961, 989, 1007, 1189, 1199, 1225, 1343, 1349, 1369, 1681, 1763, 1849, 1919, 2159, 2197, 2209, 2507, 2759, 2809, 2911, 3239, 3481, 3599, 3721, 3827, 3993, 4031, 4489, 4607, 5041, 5183, 5207, 5249]

cp's OEIS Frontend

A342418 Composite numbers k such that Euler totient phi(k) is a multiple of the arithmetic derivative of k.

Table of values

List of values