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.

A328275 Numbers m such that phi(m) = rad(m)^4, where phi is the Euler totient function (A000010) and rad is the squarefree kernel function (A007947).

Table of values

n a(n)
1 1
2 32
3 3888
4 25000
5 2839714
6 3037500
7 10890936
8 120298932
9 402627500
10 534837384
11 7489147356
12 8508543750
13 48919241250
14 111945866022
15 336977358354
16 417841706250
17 553904623764
18 1498168652148
19 2627525125250
20 2761526809032
21 2898701538750
22 7978057537338
23 16548448068126
24 20978349935382

List of values

[1, 32, 3888, 25000, 2839714, 3037500, 10890936, 120298932, 402627500, 534837384, 7489147356, 8508543750, 48919241250, 111945866022, 336977358354, 417841706250, 553904623764, 1498168652148, 2627525125250, 2761526809032, 2898701538750, 7978057537338, 16548448068126, 20978349935382]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.