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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.

A053163 n+cototient(n) produces these powers of 2 in order of magnitude.

Table of values

n a(n)
1 1
2 4
3 8
4 16
5 32
6 32
7 64
8 128
9 128
10 256
11 512
12 512
13 1024
14 1024
15 2048
16 2048
17 4096
18 4096
19 8192
20 8192
21 8192
22 16384
23 16384
24 32768
25 32768
26 65536
27 65536
28 131072
29 131072
30 131072
31 262144
32 262144
33 524288
34 524288
35 524288
36 524288
37 1048576
38 1048576
39 1048576
40 2097152

List of values

[1, 4, 8, 16, 32, 32, 64, 128, 128, 256, 512, 512, 1024, 1024, 2048, 2048, 4096, 4096, 8192, 8192, 8192, 16384, 16384, 32768, 32768, 65536, 65536, 131072, 131072, 131072, 262144, 262144, 524288, 524288, 524288, 524288, 1048576, 1048576, 1048576, 2097152]

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

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