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.

A262981 Numbers k such that the least positive integer having exactly k divisors is divisible by k.

Table of values

n a(n)
1 1
2 2
3 6
4 8
5 9
6 12
7 18
8 20
9 24
10 30
11 36
12 40
13 45
14 56
15 60
16 72
17 75
18 80
19 84
20 90
21 112
22 120
23 125
24 126
25 140
26 144
27 150
28 168
29 180
30 210
31 224
32 225
33 240
34 250
35 252
36 264
37 280
38 288
39 300
40 315
41 336
42 350
43 352
44 360
45 375
46 396
47 420
48 440
49 441
50 448
51 450
52 500
53 504
54 525
55 528
56 560
57 600
58 616
59 624
60 625

List of values

[1, 2, 6, 8, 9, 12, 18, 20, 24, 30, 36, 40, 45, 56, 60, 72, 75, 80, 84, 90, 112, 120, 125, 126, 140, 144, 150, 168, 180, 210, 224, 225, 240, 250, 252, 264, 280, 288, 300, 315, 336, 350, 352, 360, 375, 396, 420, 440, 441, 448, 450, 500, 504, 525, 528, 560, 600, 616, 624, 625]

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

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