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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.

A173327 Numbers k such that tau(phi(k))= sopf(k).

Table of values

n a(n)
1 4
2 45
3 48
4 75
5 160
6 180
7 252
8 294
9 300
10 315
11 336
12 351
13 378
14 396
15 475
16 507
17 560
18 605
19 616
20 650
21 833
22 936
23 1216
24 1375
25 1452
26 1690
27 1805
28 1920
29 2023
30 2112
31 2200
32 2349
33 2496
34 2736
35 3211
36 3520
37 3648
38 4095
39 4160
40 4256
41 4332
42 4389
43 4464
44 4477
45 4508
46 4620
47 4693

List of values

[4, 45, 48, 75, 160, 180, 252, 294, 300, 315, 336, 351, 378, 396, 475, 507, 560, 605, 616, 650, 833, 936, 1216, 1375, 1452, 1690, 1805, 1920, 2023, 2112, 2200, 2349, 2496, 2736, 3211, 3520, 3648, 4095, 4160, 4256, 4332, 4389, 4464, 4477, 4508, 4620, 4693]

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

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