cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A067160 Numbers k such that sigma(phi(sigma(k))) = phi(sigma(phi(k))).

Table of values

n a(n)
1 1
2 13
3 65
4 157
5 173
6 193
7 1093
8 1201
9 1843
10 2231
11 2753
12 3665
13 12707
14 13829
15 15269
16 19549
17 19813
18 20003
19 31601
20 32069
21 32201
22 34001
23 58091
24 72971
25 77681
26 80745
27 91505
28 112241
29 129899
30 153409
31 153851
32 180521
33 187777
34 200413
35 250961
36 261313
37 278513
38 305761

List of values

[1, 13, 65, 157, 173, 193, 1093, 1201, 1843, 2231, 2753, 3665, 12707, 13829, 15269, 19549, 19813, 20003, 31601, 32069, 32201, 34001, 58091, 72971, 77681, 80745, 91505, 112241, 129899, 153409, 153851, 180521, 187777, 200413, 250961, 261313, 278513, 305761]