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.

A173334 Numbers k such that tau(phi(k)) = phi(sum-of-prime-divisors(k)).

Table of values

n a(n)
1 2
2 3
3 15
4 18
5 24
6 28
7 30
8 33
9 39
10 50
11 52
12 55
13 80
14 132
15 133
16 152
17 169
18 186
19 187
20 190
21 195
22 207
23 215
24 217
25 222
26 230
27 238
28 247
29 261
30 266
31 305
32 319
33 333
34 340
35 352
36 369
37 371
38 414
39 481
40 484
41 494
42 496
43 497
44 506
45 516
46 522
47 559
48 574
49 580
50 611
51 644
52 646
53 660
54 671
55 689

List of values

[2, 3, 15, 18, 24, 28, 30, 33, 39, 50, 52, 55, 80, 132, 133, 152, 169, 186, 187, 190, 195, 207, 215, 217, 222, 230, 238, 247, 261, 266, 305, 319, 333, 340, 352, 369, 371, 414, 481, 484, 494, 496, 497, 506, 516, 522, 559, 574, 580, 611, 644, 646, 660, 671, 689]