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.

A049228 sigma(n)-n is a perfect square associated with A049226.

Table of values

n a(n)
1 25
2 49
3 1156
4 2809
5 1369
6 169
7 225
8 3025
9 4489
10 5929
11 441
12 5329
13 25281
14 10609
15 37249
16 10609
17 27889
18 24649
19 1225
20 22801
21 80089
22 37249
23 85849
24 34225
25 187489
26 1849
27 208849
28 157609
29 76729
30 2401
31 82369
32 267289
33 64009
34 130321
35 3771364
36 555025
37 966289
38 310249
39 344569

List of values

[25, 49, 1156, 2809, 1369, 169, 225, 3025, 4489, 5929, 441, 5329, 25281, 10609, 37249, 10609, 27889, 24649, 1225, 22801, 80089, 37249, 85849, 34225, 187489, 1849, 208849, 157609, 76729, 2401, 82369, 267289, 64009, 130321, 3771364, 555025, 966289, 310249, 344569]

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

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