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.

A085758 Least m such that phi(x)=2m has exactly n solutions.

Table of values

n a(n)
2 5
3 1
4 2
5 4
6 6
7 16
8 18
9 20
10 12
11 24
12 80
13 198
14 1134
15 352
16 156
17 36
18 168
19 108
20 468
21 72
22 312
23 528
24 880
25 180
26 1280
27 192
28 144
29 660
30 1848
31 120
32 384
33 4500
34 216
35 3564
36 2100
37 240
38 288
39 648
40 600
41 7968
42 1656
43 1536
44 1620
45 432
46 1560
47 3672
48 1944
49 360
50 840
51 2496
52 8820
53 1008
54 576

List of values

[5, 1, 2, 4, 6, 16, 18, 20, 12, 24, 80, 198, 1134, 352, 156, 36, 168, 108, 468, 72, 312, 528, 880, 180, 1280, 192, 144, 660, 1848, 120, 384, 4500, 216, 3564, 2100, 240, 288, 648, 600, 7968, 1656, 1536, 1620, 432, 1560, 3672, 1944, 360, 840, 2496, 8820, 1008, 576]

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

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