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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.

A020488 Numbers n such that tau(n) (or sigma_0(n)) = phi(n).

Table of values

n a(n)
1 1
2 3
3 8
4 10
5 18
6 24
7 30

List of values

[1, 3, 8, 10, 18, 24, 30]