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.

A093179 Smallest prime factor of the n-th Fermat number F(n) = 2^(2^n) + 1.

Table of values

n a(n)
0 3
1 5
2 17
3 257
4 65537
5 641
6 274177
7 59649589127497217
8 1238926361552897
9 2424833
10 45592577
11 319489
12 114689
13 2710954639361
14 116928085873074369829035993834596371340386703423373313
15 1214251009
16 825753601
17 31065037602817
18 13631489
19 70525124609

List of values

[3, 5, 17, 257, 65537, 641, 274177, 59649589127497217, 1238926361552897, 2424833, 45592577, 319489, 114689, 2710954639361, 116928085873074369829035993834596371340386703423373313, 1214251009, 825753601, 31065037602817, 13631489, 70525124609]

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

Content is available under The OEIS End-User License Agreement.