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.

A304291 Composite numbers k such that for all primes p dividing k, p-1 divides k-1 and p+1 divides k+1.

Table of values

n a(n)
1 8
2 27
3 32
4 125
5 128
6 243
7 343
8 512
9 1331
10 2048
11 2187
12 2197
13 3125
14 4913
15 6859
16 8192
17 12167
18 16807
19 19683
20 24389
21 29791
22 32768
23 50653
24 68921
25 74431
26 78125
27 79507
28 103823
29 131072
30 148877
31 161051
32 177147
33 205379
34 226981
35 300763
36 357911
37 371293
38 389017
39 493039
40 524288

List of values

[8, 27, 32, 125, 128, 243, 343, 512, 1331, 2048, 2187, 2197, 3125, 4913, 6859, 8192, 12167, 16807, 19683, 24389, 29791, 32768, 50653, 68921, 74431, 78125, 79507, 103823, 131072, 148877, 161051, 177147, 205379, 226981, 300763, 357911, 371293, 389017, 493039, 524288]