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.

A335400 Numbers m such that sigma(m)/isigma(m) > sigma(k)/isigma(k) for all k < m, where sigma(m) is the sum of divisors of m (A000203) and isigma(m) is the sum of infinitary divisors of m (A049417).

Table of values

n a(n)
1 1
2 4
3 16
4 144
5 1296
6 3600
7 20736
8 32400
9 176400
10 518400
11 1587600
12 12960000
13 25401600
14 635040000
15 3073593600

List of values

[1, 4, 16, 144, 1296, 3600, 20736, 32400, 176400, 518400, 1587600, 12960000, 25401600, 635040000, 3073593600]

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

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