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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.

A161764 a(n) is the largest multiple of {the number of 1's in the binary representation of n} that is <= n.

Table of values

n a(n)
1 1
2 2
3 2
4 4
5 4
6 6
7 6
8 8
9 8
10 10
11 9
12 12
13 12
14 12
15 12
16 16
17 16
18 18
19 18
20 20
21 21
22 21
23 20
24 24
25 24
26 24
27 24
28 27
29 28
30 28
31 30
32 32
33 32
34 34
35 33
36 36
37 36
38 36
39 36
40 40
41 39
42 42
43 40
44 42
45 44
46 44
47 45
48 48
49 48
50 48
51 48
52 51
53 52
54 52
55 55
56 54
57 56
58 56
59 55
60 60
61 60
62 60
63 60
64 64
65 64
66 66
67 66
68 68
69 69
70 69
71 68
72 72
73 72

List of values

[1, 2, 2, 4, 4, 6, 6, 8, 8, 10, 9, 12, 12, 12, 12, 16, 16, 18, 18, 20, 21, 21, 20, 24, 24, 24, 24, 27, 28, 28, 30, 32, 32, 34, 33, 36, 36, 36, 36, 40, 39, 42, 40, 42, 44, 44, 45, 48, 48, 48, 48, 51, 52, 52, 55, 54, 56, 56, 55, 60, 60, 60, 60, 64, 64, 66, 66, 68, 69, 69, 68, 72, 72]

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

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