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.

A124399 a(n) = 4^(n - bitcount(n)) where bitcount(n) = A000120(n).

Table of values

n a(n)
0 1
1 1
2 4
3 4
4 64
5 64
6 256
7 256
8 16384
9 16384
10 65536
11 65536
12 1048576
13 1048576
14 4194304
15 4194304
16 1073741824
17 1073741824
18 4294967296
19 4294967296
20 68719476736
21 68719476736
22 274877906944
23 274877906944
24 17592186044416
25 17592186044416

List of values

[1, 1, 4, 4, 64, 64, 256, 256, 16384, 16384, 65536, 65536, 1048576, 1048576, 4194304, 4194304, 1073741824, 1073741824, 4294967296, 4294967296, 68719476736, 68719476736, 274877906944, 274877906944, 17592186044416, 17592186044416]

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

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