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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.

A335370 Harmonic numbers m with a record number k of distinct prime numbers p_i (i = 1..k) that do not divide m such that m*p_1, m*p_1*p_2, ... , m*p_1*...*p_k are all harmonic numbers.

Table of values

n a(n)
1 1
2 28
3 1638
4 6200
5 2457000
6 4713984
7 1381161600
8 10200236032

List of values

[1, 28, 1638, 6200, 2457000, 4713984, 1381161600, 10200236032]

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

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