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.

A231119 Least positive k such that n * k^k + 1 is a prime, or 0 if no such k exists.

Table of values

n a(n)
1 1
2 1
3 2
4 1
5 102414
6 1
7 2
8 17
9 2
10 1
11 36
12 1
13 2
14 3
15 2
16 1
17 210
18 1
19 20
20 3
21 990
22 1
23 6
24 2
25 2
26 6
27 2
28 1

List of values

[1, 1, 2, 1, 102414, 1, 2, 17, 2, 1, 36, 1, 2, 3, 2, 1, 210, 1, 20, 3, 990, 1, 6, 2, 2, 6, 2, 1]