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.

A367004 a(n) is the smallest prime factor of n*2^n+1.

Table of values

n a(n)
1 3
2 3
3 5
4 5
5 7
6 5
7 3
8 3
9 11
10 7
11 13
12 13
13 3
14 3
15 17
16 17
17 5
18 11
19 3
20 3
21 23
22 13
23 5
24 5
25 3
26 3
27 7
28 29
29 31
30 17
31 3
32 3
33 47
34 19
35 37
36 37
37 3
38 3
39 41
40 41
41 13
42 23
43 3
44 3
45 11
46 5
47 7
48 7
49 3
50 3
51 53
52 7
53 5591
54 29
55 3
56 3
57 5
58 31
59 37
60 61
61 3
62 3
63 5
64 5
65 67
66 5
67 3
68 3
69 7
70 37
71 11
72 41
73 3
74 3
75 149

List of values

[3, 3, 5, 5, 7, 5, 3, 3, 11, 7, 13, 13, 3, 3, 17, 17, 5, 11, 3, 3, 23, 13, 5, 5, 3, 3, 7, 29, 31, 17, 3, 3, 47, 19, 37, 37, 3, 3, 41, 41, 13, 23, 3, 3, 11, 5, 7, 7, 3, 3, 53, 7, 5591, 29, 3, 3, 5, 31, 37, 61, 3, 3, 5, 5, 67, 5, 3, 3, 7, 37, 11, 41, 3, 3, 149]