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.

A256149 Square numbers n such that sigma(n) is a triangular number.

Table of values

n a(n)
1 1
2 36
3 441
4 5625
5 6084
6 407044
7 8444836
8 17388900
9 35070084
10 40729924
11 57790404
12 80138304
13 537822481
14 588159504
15 659821969
16 918999225
17 1820387556
18 2179862721
19 2599062361
20 5110963081
21 28816420516
22 36144473689
23 46082779561
24 55145598561
25 147225690000
26 163405126756

List of values

[1, 36, 441, 5625, 6084, 407044, 8444836, 17388900, 35070084, 40729924, 57790404, 80138304, 537822481, 588159504, 659821969, 918999225, 1820387556, 2179862721, 2599062361, 5110963081, 28816420516, 36144473689, 46082779561, 55145598561, 147225690000, 163405126756]