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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.

A094502 a(n) = A000203(A046528(n)): sigma of those numbers whose sigma is a power of 2, in order of appearance.

Table of values

n a(n)
1 1
2 4
3 8
4 32
5 32
6 128
7 128
8 256
9 512
10 1024
11 1024
12 4096
13 4096
14 8192
15 16384
16 32768
17 32768
18 65536
19 131072
20 131072
21 262144
22 262144
23 524288
24 524288
25 1048576
26 1048576
27 1048576
28 2097152
29 2097152
30 4194304
31 4194304
32 4194304
33 4194304
34 8388608

List of values

[1, 4, 8, 32, 32, 128, 128, 256, 512, 1024, 1024, 4096, 4096, 8192, 16384, 32768, 32768, 65536, 131072, 131072, 262144, 262144, 524288, 524288, 1048576, 1048576, 1048576, 2097152, 2097152, 4194304, 4194304, 4194304, 4194304, 8388608]

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

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