A006872 - cp's OEIS frontend

A006872 Numbers k such that phi(k) = phi(sigma(k)).

n	a(n)
1	1
2	3
3	15
4	26
5	39
6	45
7	74
8	104
9	111
10	117
11	122
12	146
13	175
14	183
15	195
16	219
17	296
18	314
19	333
20	357
21	386
22	471
23	488
24	549
25	554
26	555
27	579
28	584
29	585
30	608
31	626
32	646
33	657
34	794
35	831
36	842
37	914
38	915
39	939
40	962
41	1071
42	1082
43	1095
44	1191
45	1226
46	1256
47	1263
48	1292
49	1322
50	1346

[1, 3, 15, 26, 39, 45, 74, 104, 111, 117, 122, 146, 175, 183, 195, 219, 296, 314, 333, 357, 386, 471, 488, 549, 554, 555, 579, 584, 585, 608, 626, 646, 657, 794, 831, 842, 914, 915, 939, 962, 1071, 1082, 1095, 1191, 1226, 1256, 1263, 1292, 1322, 1346]

cp's OEIS Frontend

A006872 Numbers k such that phi(k) = phi(sigma(k)).

Table of values

List of values