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.

A366609 Smallest prime dividing 4^n + 1.

Table of values

n a(n)
0 2
1 5
2 17
3 5
4 257
5 5
6 17
7 5
8 65537
9 5
10 17
11 5
12 97
13 5
14 17
15 5
16 641
17 5
18 17
19 5
20 257
21 5
22 17
23 5
24 193
25 5
26 17
27 5
28 257
29 5
30 17
31 5
32 274177
33 5
34 17
35 5
36 97
37 5
38 17
39 5
40 65537
41 5
42 17
43 5
44 257
45 5
46 17
47 5
48 641
49 5
50 17
51 5
52 257
53 5
54 17
55 5
56 449
57 5
58 17
59 5
60 97
61 5
62 17
63 5
64 59649589127497217

List of values

[2, 5, 17, 5, 257, 5, 17, 5, 65537, 5, 17, 5, 97, 5, 17, 5, 641, 5, 17, 5, 257, 5, 17, 5, 193, 5, 17, 5, 257, 5, 17, 5, 274177, 5, 17, 5, 97, 5, 17, 5, 65537, 5, 17, 5, 257, 5, 17, 5, 641, 5, 17, 5, 257, 5, 17, 5, 449, 5, 17, 5, 97, 5, 17, 5, 59649589127497217]