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.

A232354 Numbers k that divide sigma(k^2) where sigma is the sum of divisors function (A000203).

Table of values

n a(n)
1 1
2 39
3 793
4 2379
5 7137
6 13167
7 76921
8 78507
9 230763
10 238887
11 549549
12 692289
13 863577
14 1491633
15 1672209
16 2076867
17 4317885
18 7615179
19 8329831
20 10441431
21 23402223
22 24989493
23 37776123
24 53306253
25 53695813
26 55871145
27 74968479
28 83766969
29 133854435
30 144688401
31 161087439
32 189437391

List of values

[1, 39, 793, 2379, 7137, 13167, 76921, 78507, 230763, 238887, 549549, 692289, 863577, 1491633, 1672209, 2076867, 4317885, 7615179, 8329831, 10441431, 23402223, 24989493, 37776123, 53306253, 53695813, 55871145, 74968479, 83766969, 133854435, 144688401, 161087439, 189437391]