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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.

A143146 a(n) is the smallest positive multiple of n that has the same number of 0's as 1's in its binary representation.

Table of values

n a(n)
1 2
2 2
3 9
4 12
5 10
6 12
7 35
8 56
9 9
10 10
11 44
12 12
13 52
14 42
15 135
16 240
17 153
18 180
19 38
20 180
21 42
22 44
23 184
24 216
25 50
26 52
27 135
28 56
29 232
30 150
31 527
32 992
33 165
34 170
35 35
36 180
37 37
38 38
39 156
40 240
41 41
42 42
43 172
44 44
45 135
46 184
47 141
48 240
49 49
50 50
51 153
52 52
53 212
54 216
55 165
56 56
57 228
58 232
59 177
60 180

List of values

[2, 2, 9, 12, 10, 12, 35, 56, 9, 10, 44, 12, 52, 42, 135, 240, 153, 180, 38, 180, 42, 44, 184, 216, 50, 52, 135, 56, 232, 150, 527, 992, 165, 170, 35, 180, 37, 38, 156, 240, 41, 42, 172, 44, 135, 184, 141, 240, 49, 50, 153, 52, 212, 216, 165, 56, 228, 232, 177, 180]

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

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