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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.

A329202 a(n) = floor(2*log_2(n)) = floor(log_2(n^2)).

Table of values

n a(n)
1 0
2 2
3 3
4 4
5 4
6 5
7 5
8 6
9 6
10 6
11 6
12 7
13 7
14 7
15 7
16 8
17 8
18 8
19 8
20 8
21 8
22 8
23 9
24 9
25 9
26 9
27 9
28 9
29 9
30 9
31 9
32 10
33 10
34 10
35 10
36 10
37 10
38 10
39 10
40 10
41 10
42 10
43 10
44 10
45 10
46 11
47 11
48 11
49 11
50 11
51 11
52 11
53 11
54 11
55 11
56 11
57 11
58 11
59 11
60 11
61 11
62 11
63 11
64 12
65 12
66 12
67 12
68 12
69 12
70 12
71 12
72 12
73 12
74 12
75 12
76 12
77 12
78 12
79 12
80 12

List of values

[0, 2, 3, 4, 4, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12]

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