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.

A349145 Number of ordered n-tuples (x_1, x_2, x_3, ..., x_n) such that Sum_{k=1..n} k/x_k is an integer and x_k is an integer between 1 and n for 1 <= k <= n.

Table of values

n a(n)
0 1
1 1
2 2
3 8
4 43
5 207
6 2391
7 15539
8 182078
9 2070189
10 35850460
11 338695058
12 10609401552
13 115445915555

List of values

[1, 1, 2, 8, 43, 207, 2391, 15539, 182078, 2070189, 35850460, 338695058, 10609401552, 115445915555]

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

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