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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.

A331985 a(n) is the least positive k such that n AND floor(n/k) = 0 (where AND denotes the bitwise AND operator).

Table of values

n a(n)
0 1
1 2
2 2
3 4
4 2
5 2
6 4
7 8
8 2
9 2
10 2
11 12
12 4
13 5
14 8
15 16
16 2
17 2
18 2
19 4
20 2
21 2
22 12
23 24
24 4
25 4
26 5
27 6
28 8
29 10
30 16
31 32
32 2
33 2
34 2
35 4
36 2
37 2
38 4
39 40
40 2
41 2
42 2
43 9
44 12
45 16
46 24
47 48
48 4
49 4
50 4
51 4
52 5
53 5
54 6
55 56
56 8
57 9
58 10
59 12
60 16
61 21
62 32
63 64
64 2
65 2
66 2
67 4
68 2
69 2
70 4
71 8
72 2
73 2
74 2
75 16
76 4
77 26
78 40

List of values

[1, 2, 2, 4, 2, 2, 4, 8, 2, 2, 2, 12, 4, 5, 8, 16, 2, 2, 2, 4, 2, 2, 12, 24, 4, 4, 5, 6, 8, 10, 16, 32, 2, 2, 2, 4, 2, 2, 4, 40, 2, 2, 2, 9, 12, 16, 24, 48, 4, 4, 4, 4, 5, 5, 6, 56, 8, 9, 10, 12, 16, 21, 32, 64, 2, 2, 2, 4, 2, 2, 4, 8, 2, 2, 2, 16, 4, 26, 40]

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