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.

A243109 a(n) is the largest number smaller than n and having the same Hamming weight as n, or n if no such number exist.

Table of values

n a(n)
0 0
1 1
2 1
3 3
4 2
5 3
6 5
7 7
8 4
9 6
10 9
11 7
12 10
13 11
14 13
15 15
16 8
17 12
18 17
19 14
20 18
21 19
22 21
23 15
24 20
25 22
26 25
27 23
28 26
29 27
30 29
31 31
32 16
33 24
34 33
35 28
36 34
37 35
38 37
39 30
40 36
41 38
42 41
43 39
44 42
45 43
46 45
47 31
48 40
49 44
50 49
51 46
52 50
53 51
54 53
55 47
56 52
57 54
58 57
59 55
60 58
61 59
62 61
63 63
64 32
65 48
66 65
67 56
68 66
69 67
70 69

List of values

[0, 1, 1, 3, 2, 3, 5, 7, 4, 6, 9, 7, 10, 11, 13, 15, 8, 12, 17, 14, 18, 19, 21, 15, 20, 22, 25, 23, 26, 27, 29, 31, 16, 24, 33, 28, 34, 35, 37, 30, 36, 38, 41, 39, 42, 43, 45, 31, 40, 44, 49, 46, 50, 51, 53, 47, 52, 54, 57, 55, 58, 59, 61, 63, 32, 48, 65, 56, 66, 67, 69]

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

Content is available under The OEIS End-User License Agreement.