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.

A072326 Conjectured values of n such that the sum of proper divisors of x*n is never prime for any x >= 1 (i.e., sigma(xn) - xn is never prime for x >= 1).

Table of values

n a(n)
1 42
2 78
3 84
4 114
5 126
6 156
7 168
8 174
9 186
10 210

List of values

[42, 78, 84, 114, 126, 156, 168, 174, 186, 210]