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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.

A197639 GA2 numbers: n with G(n) >= G(a*n) for all integers a > 0, where G(k) = sigma(k)/(k*log(log(k))) and sigma(k) = sum of divisors of k.

Table of values

n a(n)
1 3
2 4
3 5
4 6
5 8
6 10
7 12
8 18
9 24
10 36
11 48
12 60
13 72
14 120
15 180
16 240
17 360
18 2520
19 5040

List of values

[3, 4, 5, 6, 8, 10, 12, 18, 24, 36, 48, 60, 72, 120, 180, 240, 360, 2520, 5040]

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

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