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.

A057246 s=0; d is divisor of n [here d <= n/d]; if gcd(d,n/d)=1 or gcd(d,n/d)=d then s=s+d+(n/d); [if d=n/d then s=s+d]: The sequence contains composite n for which s = 2*n.

Table of values

n a(n)
1 6
2 28
3 6966
4 15066

List of values

[6, 28, 6966, 15066]

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

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