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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.

A053162 Nonprimes n such that n+cototient(n) is a power of 2.

Table of values

n a(n)
1 1
2 10
3 20
4 40
5 80
6 160
7 320
8 322
9 640
10 644
11 1280
12 1288
13 2560
14 2576
15 5120
16 5152
17 10240
18 10304
19 20480
20 20608
21 40960
22 41216
23 81920
24 82432
25 163840
26 164864
27 327680
28 329728
29 333634
30 655360
31 659456
32 667268
33 1310720
34 1318912
35 1334536
36 1378114
37 2621440

List of values

[1, 10, 20, 40, 80, 160, 320, 322, 640, 644, 1280, 1288, 2560, 2576, 5120, 5152, 10240, 10304, 20480, 20608, 40960, 41216, 81920, 82432, 163840, 164864, 327680, 329728, 333634, 655360, 659456, 667268, 1310720, 1318912, 1334536, 1378114, 2621440]

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

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