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.

A078769 Numbers k such that k * phi(k)^2 < sigma(k)^2.

Table of values

n a(n)
0 2
1 3
2 4
3 6
4 8
5 10
6 12
7 14
8 18
9 20
10 24
11 30
12 36
13 42
14 48
15 60
16 84
17 90
18 120

List of values

[2, 3, 4, 6, 8, 10, 12, 14, 18, 20, 24, 30, 36, 42, 48, 60, 84, 90, 120]