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.

A232538 Numbers n such that (n(n+1)/2) modulo sigma(n) = n.

Table of values

n a(n)
1 33
2 136
3 145
4 261
5 897
6 1441
7 2016
8 2241
9 2353
10 3808
11 4320
12 7201
13 17101
14 26937
15 30721
16 32896
17 46593
18 70561
19 148960
20 151633
21 169345
22 174592
23 208801
24 400401
25 578593
26 712801
27 803800
28 1040401
29 1103233
30 1596673
31 2265121
32 2377089
33 3330001
34 4357153
35 5953024
36 5962321

List of values

[33, 136, 145, 261, 897, 1441, 2016, 2241, 2353, 3808, 4320, 7201, 17101, 26937, 30721, 32896, 46593, 70561, 148960, 151633, 169345, 174592, 208801, 400401, 578593, 712801, 803800, 1040401, 1103233, 1596673, 2265121, 2377089, 3330001, 4357153, 5953024, 5962321]