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.

A180490 Numbers k such that (A000120(k))^2 divides k.

Table of values

n a(n)
1 1
2 2
3 4
4 8
5 12
6 16
7 20
8 24
9 32
10 36
11 40
12 48
13 64
14 68
15 72
16 80
17 81
18 96
19 128
20 132
21 136
22 144
23 160
24 162
25 192
26 240
27 252
28 256
29 260
30 261
31 264
32 272
33 288
34 320
35 324
36 368
37 384
38 425
39 432
40 464
41 480
42 504
43 512
44 516
45 520
46 522
47 528
48 544
49 576
50 624
51 625
52 637
53 640
54 648
55 675
56 688
57 720

List of values

[1, 2, 4, 8, 12, 16, 20, 24, 32, 36, 40, 48, 64, 68, 72, 80, 81, 96, 128, 132, 136, 144, 160, 162, 192, 240, 252, 256, 260, 261, 264, 272, 288, 320, 324, 368, 384, 425, 432, 464, 480, 504, 512, 516, 520, 522, 528, 544, 576, 624, 625, 637, 640, 648, 675, 688, 720]