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.

A108989 Composite numbers k with primitive root 2; i.e., the order of 2 modulo k is phi(k).

Table of values

n a(n)
1 9
2 25
3 27
4 81
5 121
6 125
7 169
8 243
9 361
10 625
11 729
12 841
13 1331
14 1369
15 2187
16 2197
17 2809
18 3125
19 3481
20 3721
21 4489
22 6561
23 6859
24 6889
25 10201
26 11449
27 14641
28 15625
29 17161
30 19321
31 19683
32 22201
33 24389
34 26569
35 28561
36 29929
37 32041
38 32761
39 38809
40 44521
41 50653

List of values

[9, 25, 27, 81, 121, 125, 169, 243, 361, 625, 729, 841, 1331, 1369, 2187, 2197, 2809, 3125, 3481, 3721, 4489, 6561, 6859, 6889, 10201, 11449, 14641, 15625, 17161, 19321, 19683, 22201, 24389, 26569, 28561, 29929, 32041, 32761, 38809, 44521, 50653]