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.

A132585 Numbers k such that sigma(k)-k-1 divides sigma(k+1)-k-2, where sigma(k) is sum of positive divisors of k and the ratio is greater than zero.

Table of values

n a(n)
1 25
2 49
3 799
4 899
5 32399
6 292681
7 1492995736325809

List of values

[25, 49, 799, 899, 32399, 292681, 1492995736325809]

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

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