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.

A379715 The second Jordan totient function applied to the squarefree numbers.

Table of values

n a(n)
1 1
2 3
3 8
4 24
5 24
6 48
7 72
8 120
9 168
10 144
11 192
12 288
13 360
14 384
15 360
16 528
17 504
18 840
19 576
20 960
21 960
22 864
23 1152
24 1368
25 1080
26 1344
27 1680
28 1152
29 1848
30 1584
31 2208
32 2304
33 2808
34 2880
35 2880
36 2520
37 3480
38 3720
39 2880
40 4032
41 2880
42 4488
43 4224
44 3456
45 5040
46 5328
47 4104
48 5760
49 4032

List of values

[1, 3, 8, 24, 24, 48, 72, 120, 168, 144, 192, 288, 360, 384, 360, 528, 504, 840, 576, 960, 960, 864, 1152, 1368, 1080, 1344, 1680, 1152, 1848, 1584, 2208, 2304, 2808, 2880, 2880, 2520, 3480, 3720, 2880, 4032, 2880, 4488, 4224, 3456, 5040, 5328, 4104, 5760, 4032]

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

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