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.

A015974 Numbers k that divide 4^k + 1, k not a power of 5.

Table of values

n a(n)
1 205
2 1025
3 2525
4 5125
5 8405
6 12625
7 25625
8 42025
9 63125
10 103525
11 128125
12 168305
13 202525
14 210125
15 255025
16 315625
17 344605
18 517625
19 640625
20 841525
21 875125
22 1012625
23 1050625
24 1275125
25 1578125
26 1723025
27 2042725
28 2084645

List of values

[205, 1025, 2525, 5125, 8405, 12625, 25625, 42025, 63125, 103525, 128125, 168305, 202525, 210125, 255025, 315625, 344605, 517625, 640625, 841525, 875125, 1012625, 1050625, 1275125, 1578125, 1723025, 2042725, 2084645]