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.

A279686 Numbers that are the least integer of a prime tower factorization equivalence class (see Comments for details).

Table of values

n a(n)
1 1
2 2
3 4
4 6
5 8
6 12
7 16
8 18
9 30
10 36
11 40
12 48
13 60
14 64
15 72
16 81
17 90
18 108
19 144
20 162
21 180
22 192
23 200
24 210
25 225
26 240
27 256
28 280
29 320
30 324
31 360
32 405
33 420
34 432
35 450
36 500
37 512
38 540
39 576
40 600
41 630
42 648
43 720
44 768
45 810
46 900
47 960
48 1260
49 1280
50 1296
51 1350
52 1400
53 1536
54 1575
55 1600

List of values

[1, 2, 4, 6, 8, 12, 16, 18, 30, 36, 40, 48, 60, 64, 72, 81, 90, 108, 144, 162, 180, 192, 200, 210, 225, 240, 256, 280, 320, 324, 360, 405, 420, 432, 450, 500, 512, 540, 576, 600, 630, 648, 720, 768, 810, 900, 960, 1260, 1280, 1296, 1350, 1400, 1536, 1575, 1600]

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

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