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.

A262375 Smallest prime factor of 4*n! - 1.

Table of values

n a(n)
0 3
1 3
2 7
3 23
4 5
5 479
6 2879
7 19
8 17
9 569
10 14515199
11 159667199
12 73
13 47
14 61
15 4993
16 43
17 455999
18 409
19 1562713
20 1249
21 59
22 50207
23 29
24 71
25 61651424911
26 1407512357
27 41
28 43613
29 10839629
30 209206253
31 47699
32 3915930850588639
33 12149
34 337
35 97
36 1783
37 214872195913
38 89
39 649849
40 8405532131
41 997
42 53
43 73
44 59
45 34877

List of values

[3, 3, 7, 23, 5, 479, 2879, 19, 17, 569, 14515199, 159667199, 73, 47, 61, 4993, 43, 455999, 409, 1562713, 1249, 59, 50207, 29, 71, 61651424911, 1407512357, 41, 43613, 10839629, 209206253, 47699, 3915930850588639, 12149, 337, 97, 1783, 214872195913, 89, 649849, 8405532131, 997, 53, 73, 59, 34877]