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.

A048109 Numbers having equally many squarefree and nonsquarefree divisors; number of unitary divisors of n (A034444) = number of non-unitary divisors of n (A048105).

Table of values

n a(n)
1 8
2 24
3 27
4 40
5 54
6 56
7 88
8 104
9 120
10 125
11 135
12 136
13 152
14 168
15 184
16 189
17 232
18 248
19 250
20 264
21 270
22 280
23 296
24 297
25 312
26 328
27 343
28 344
29 351
30 375
31 376
32 378
33 408
34 424
35 440
36 456
37 459
38 472
39 488
40 513
41 520
42 536
43 552
44 568
45 584
46 594
47 616
48 621
49 632
50 664
51 680
52 686
53 696

List of values

[8, 24, 27, 40, 54, 56, 88, 104, 120, 125, 135, 136, 152, 168, 184, 189, 232, 248, 250, 264, 270, 280, 296, 297, 312, 328, 343, 344, 351, 375, 376, 378, 408, 424, 440, 456, 459, 472, 488, 513, 520, 536, 552, 568, 584, 594, 616, 621, 632, 664, 680, 686, 696]

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

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